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Journal articles on the topic 'Spleen hemangiosarcoma'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Herman, Eric J., Adam W. Stern, Richard J. Fox, and Michael J. Dark. "Understanding the Efficiency of Splenic Hemangiosarcoma Diagnosis Using Monte Carlo Simulations." Veterinary Pathology 56, no. 6 (2019): 856–59. http://dx.doi.org/10.1177/0300985819868732.

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Hemangiosarcoma is a common neoplasm of the spleen in older dogs. However, diagnosis is complicated by necrosis and hemorrhage, which can mimic a number of benign processes. Currently, there is no consensus about the number of sections pathologists should examine to rule out hemangiosarcoma. To answer this question, we examined 413 histopathologic sections from 50 cases of canine hemangiosarcoma (mean: 8.1 sections per case; range, 5–14). Each section had the presence or absence of hemangiosarcoma determined by 2 board-certified anatomic pathologists. Then, 100 Monte Carlo simulations were per

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Tsanko, Hristov. "ULTRASOUND FINDINGS IN DOGS WITH SPLENIC HEMANGIOSARCOMA." TRADITION AND MODERNITY IN VETERINARY MEDICINE 5, no. 2 (2020): 15–20. https://doi.org/10.5281/zenodo.4317322.

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There were 21 ultrasonographic studies conducted on separate dogs with the average age being 9.6±0.63 years with pathohistologically proven hemangiosarcoma of the spleen. The tumor lesions were with different sizes ranging from 0.5 to upwards of 7cm with irregular shape, uneven outlines and poor differentiation from the surrounding tissue. In the cases of bigger neoplastic formations heteroechogenity and internal cavities were easy to see and were caused by tissue breaking apart. In 23.8% of dogs with spleen hemangiosarcoma we found hemorrhagic peritoneal effusion. The combination of th

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3

REDDY, SHASHIDHAR C., and SUDHEER C. REDDY. "Hemangiosarcoma of the Spleen." Southern Medical Journal 93, no. 8 (2000): 825–27. http://dx.doi.org/10.1097/00007611-200008000-00021.

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REDDY, SHASHIDHAR C., and SUDHEER C. REDDY. "Hemangiosarcoma of the Spleen." Southern Medical Journal 93, no. 8 (2000): 825–27. http://dx.doi.org/10.1097/00007611-200093080-00021.

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5

Wyckliff, Ngetich. "Splenic Hemangiosarcoma in a 10- year male German Shepherd dog: Case Report." International Journal of Veterinary Science and Research 3, no. 2 (2017): 078–81. https://doi.org/10.17352/ijvsr.000026.

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Hemangiosarcoma is a malignant tumor of endothelial cells and mostly seen in dogs than in other species. A 10-year male German shepherd dog (GSD) was presented to the small animal clinic with history of swollen abdomen and weakness. The dog was conscious but lethargic, weak, tachycardic with muffl ed heart sounds, labored breathing and tensed swollen abdomen. Radiography, Ultrasonography and a hemogram and biochemistry indicated splenic mass, internal hemorrhage and hemostasis pathology. The dog was euthanized and on post mortem examination, diagnosis of splenic  hemangiosarcoma was made.

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Tsanko, Hristov. "BLOOD CHEMISTRY IN DOGS WITH SPLENIC HEMANGIOSARCOMA." TRADITION AND MODERNITY IN VETERINARY MEDICINE 6, no. 1 (2021): 11–14. https://doi.org/10.5281/zenodo.4613430.

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There were 21 blood chemistry examinations conducted on separate dogs with the average age be-ing 9.6±0.63years with pathohistologically proven hemangiosarcoma of the spleen. The results were compared with a control group of 10 clinically healthy dogs. We confirmed higher values of ASAT, ALAT, AP, bilirubin, hyperproteinemia, hypoalbuminemia, hyperglobulinemia, urea and creatinine. In conclusion: hemangiosarcoma of the spleen in dogs is accompanied with data for serious kidney and liver dysfunction.

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7

Gudan Kurilj, Andrea, Krešimir Severin, Marko Hohšteter, et al. "Pathomorphological features and mast cell count in canine visceral hemangiosarcomas." Veterinarski arhiv 91, no. 2 (2021): 159–68. http://dx.doi.org/10.24099/vet.arhiv.1245.

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Visceral hemangiosarcoma were analyzed at the Department of Veterinary Pathology of the Faculty of Veterinary Medicine, University of Zagreb, over a 5-year period. From a total of 52 tumor masses in a total of 31 dogs, histological growth patterns (cavernous, capillary or solid) and the amount of tumor supporting stroma were evaluated. Additionally, sections were stained with toluidine blue for the purpose of mast cell detection and their number was determined in the tumor parenchyma, tumor stroma and edges. The average age of the affected animals was 10 years, males predominated, and the tumo

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8

Paranjpe, Madhav G., Jessica L. Belich, Dayauna R. Richardson, et al. "Progression of Serosal Vascular Proliferative Lesions to Hemangiosarcomas in the Uterus of the 26-Week Tg.rasH2 Mice Carcinogenicity Studies." International Journal of Toxicology 36, no. 1 (2016): 29–34. http://dx.doi.org/10.1177/1091581816659068.

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Tg.rasH2 mice are predisposed to hemangiosarcomas. Following the spleen, the uterus is the second most commonly affected organ in the female mice. Female mice are also predisposed to spontaneous vascular proliferative lesions on the serosal surface of the uterus, in which there is proliferation of normal vessels that are lined by well-differentiated endothelial cells. The hemangiosarcomas and vascular proliferative lesions can occur independently. In our facility, we have recorded a total of 47 uterine hemangiosarcomas in 3,985 female Tg.rasH2 mice assigned to various groups in 38 studies. Of

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9

Spangler, W. L., and M. R. Culbertson. "Prevalence, type, and importance of splenic diseases in dogs: 1,480 cases (1985-1989)." Journal of the American Veterinary Medical Association 200, no. 6 (1992): 829–934. http://dx.doi.org/10.2460/javma.1992.200.06.829.

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Summary The prevalence data of splenic diseases from 3 sources were studied. Group 1 consisted of a general diagnostic survey of accessions submitted from private veterinary hospitals in California during a period of approximately 4 years and included 1,372 submissions of canine splenic tissue. Group 2 consisted of surgical splenectomy specimens from 92 dogs; the specimens were submitted to the laboratory for gross and histologic evaluation prior to fixation, and a questionnaire was subsequently sent to determine the outcome of the disease. Group 3 was made up of specimens of 105 splenic lesio

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10

Noleto de Paiva, Felipe, Vitor Eduardo Arantes de Barros, Eric Saymom Andrade Brito, and Adilson Donizeti Damasceno. "Hemangiosarcoma in skin, brain and spinal cord of a bitch – case report." Clínica Veterinária XXIII, no. 134 (2018): 48–56. http://dx.doi.org/10.46958/rcv.2018.xxiii.n.134.p.48-56.

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Hemangiosarcoma is a neoplasm which originates from the vascular endothelium, presenting itself in two distinct forms, visceral and non-visceral. The visceral form occurs mainly in the spleen, with main foci of metastasis in the lungs, liver, omentum and mesentery, affecting the central nervous system in rare cases. The present study reports on a case of hemangiosarcoma in a bitch, with cutaneous and central nervous system involvement. The animal presented important neurological signs with an acute clinical evolution, and was submitted to euthanasia. Necroscopic examination revealed multiple c

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11

KUSAKABE, Mitsuhiko, Hiromi TANEMURA, Hiroo OHSHITA, Akihiro KANNO, Tsuneaki HATOU, and Syuuji KOMORI. "A CASE REPORT OF HEMANGIOSARCOMA OF THE SPLEEN." Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association) 65, no. 2 (2004): 491–96. http://dx.doi.org/10.3919/jjsa.65.491.

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12

Pereira, Gabriela Oliveira, Nathalia Da Silva Carvalho, Paula Dias Retamero, et al. "Metastatic Hemangiosarcoma in a Cow." Acta Scientiae Veterinariae 46 (April 7, 2018): 5. http://dx.doi.org/10.22456/1679-9216.86589.

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Background: Hemangiosarcoma is a malignant mesenchymal neoplasm of endothelial cells that mainly affects dogs and is less common in horses, cattle, goats, pigs, and sheep. In ruminants, however, few cases of hemangiosarcoma have been reported. Although this neoplasm may primarily occur in any tissue, it most often originates in the spleen, liver, heart, and skin. This study reports the clinical and pathological findings of a bovine hemangiosarcoma.Case: A 10-year-old lactating Girolando cow from the municipality of Vassouras/RJ was examinated because of uncontrolled cough and bilateral hemopty

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13

Grechko, Viktor V., and Dmitry K. Ovchinnikov. "ELECTROCHEMOTHERAPY IN THE TREATMENT OF HEMANGIOSARCOMA IN DOGS (CLINICAL CASE)." Bulletin Samara State Agricultural Academy 10, no. 1 (2025): 79–85. https://doi.org/10.55170/1997-3225-2025-10-1-79-85.

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The article describes a clinical case of hemangiosarcoma treatment in a 7-year-old Labrador dog, local tumor control using intrave-nous bleomycin and subsequent tumor removal, as well as combined administration of calcium gluconate directly into the area of the tumor node. Hemangiosarcoma is a malignant tumor that is quite common in dogs in middle and older age. Labradors, German Shepherds, and Retrievers are the most susceptible to this disease. The causes of the identified cancer are not yet known, but it is safe to say that the main organs that are affected more often in an animal are the s

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14

Wood, CA, AS Moore, JM Gliatto, LA Ablin, RJ Berg, and WM Rand. "Prognosis for dogs with stage I or II splenic hemangiosarcoma treated by splenectomy alone: 32 cases (1991-1993)." Journal of the American Animal Hospital Association 34, no. 5 (1998): 417–21. http://dx.doi.org/10.5326/15473317-34-5-417.

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A retrospective analysis was performed on the case records of 32 dogs with Stage I or II splenic hemangiosarcoma that were treated by splenectomy alone and that survived the seven-day postoperative period. Median survival time for these 32 cases was 86 days (mean, 116 days; range, 14 to 470 days), and the one-year survival rate was estimated to be 6.25%. Survival was not influenced by signalment, presenting signs, stage of disease, or clinicopathological findings. The data provides a basis from which to evaluate adjuvant chemotherapy for splenic hemangiosarcoma that is confined to the spleen m

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15

Varela, Belén, Camila Larrañaga, Kanji Yamasaki, and José Manuel Verdes. "Histopathological case study of canine hemangiosarcoma with multiple organ metastases." Brazilian Journal of Veterinary Pathology 15, no. 3 (2022): 168–72. http://dx.doi.org/10.24070/bjvp.1983-0246.v15i3p168-172.

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We studied a 14-year-old male dog necropsied. Gross findings were hemorrhagic nodules in the spleen, liver, heart and abdominal and thoracic lymph nodes. Histologically, we homogeneously observed tumor cells often with prominent, bulging and mitotic nuclei that were pleomorphic and hyperchromatic, forming small blood vessels. Tumors in all organs were diagnosed as capillary hemangiosarcomas. No tumor cells were detected in the lungs. We presume that the primary tumor was present in the spleen, from where it metastasized multiple organs via lymphatic vessels.

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16

Robveille, Cynthia, Ricardo G. Maggi, Erin Lashnits, et al. "Molecular detection of Bartonella spp. DNA in dogs with hemangiosarcoma." PLOS One 20, no. 4 (2025): e0321806. https://doi.org/10.1371/journal.pone.0321806.

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Introduction The potential role of pathogens, particularly vector-transmitted infectious agents, as a cofactor or cause of neoplasia has not been intensively investigated. We previously reported a potential link between Bartonella spp. bacteremia and splenic hemangiosarcoma (HSA) in dogs living in the United States. The purpose of this study was to: 1/ further determine the prevalence of Bartonella spp. DNA in dogs with splenic HSA from throughout the United States; 2/ assess the impact of sample preservation methods on Bartonella spp. DNA amplification using characterized tissue samples from

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17

Jayasree, N., Ch Srilatha, N. Sailaja, R. Venu, and W. L. N. V. Varaprasad. "Pathological and immunohistochemical studies on hemangiosarcoma in tigers Panthera tigris and lions Panthera Leo." Journal of Threatened Taxa 10, no. 7 (2018): 11920. http://dx.doi.org/10.11609/jott.2959.10.7.11920-11924.

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Five cases of hemangiosarcoma were documented in three tigers and two lions during post-mortem examinations. Grossly, reddish-black coloured elevated masses were noticed with metastasis to the spleen. In one tiger, an enlarged liver with severe oozing of blood on a cut section was noticed without any elevated masses. In a white tiger, the tumour mass was located near the abdominal region. Histopathological features revealed the presence of immature plump endothelial cells forming blood filled irregular vascular spaces. Immunohistochemically, strong immunoreactivity in the cytoplasm of neoplast

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18

Hill, Rebecca. "Anaesthetic considerations for a bleeding hemangiosarcoma undergoing splenectomy." Veterinary Nurse 14, no. 7 (2023): 304–7. http://dx.doi.org/10.12968/vetn.2023.14.7.304.

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A haemangiosarcoma is a type of cancer that is common in dogs. Most cases originate from the spleen. Typically these patients present with haemoabdomen for splenectomy. Care should be taken to thoroughly assess and stabilise the patient prior to anaesthesia. These patients are often critical, and consideration should be taken of the equipment and monitoring devices required. ECG, blood pressure, SpO2 and capnography are all vital when monitoring the anaesthetic for these patients.

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19

Köse, Şamil Buğra, Zeynep Semerci, Muhammed Taha Kaya, and Zeynep Nurselin Kot. "Hemangiosarcoma with brain metastasis in a cocker spaniel in Türkiye." Veteriner Hekimler Derneği Dergisi 96, no. 2 (2025): 140–47. https://doi.org/10.33188/vetheder.1588230.

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A 2.5 years old male English Cocker Spaniel dog was admitted to our clinic with symptoms of left axis circling, increased vocalization and vestibular ataxia. The patient's medical history revealed that the left hind limb was amputated due to a malignant tumor and the tumor type was confirmed as hemangiosarcoma by pathology report. As a result of physical, neurological and radiographic examinations, intracranial tumor metastasis of primary origin in the left hind limb was suspected. No abnormal findings were found in the cerebrospinal fluid obtained from the patient. Advanced imaging techniques

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20

Stancu, Adrian, Romeo Teodor Cristina, Alina Ghise, et al. "Contribution Regarding the Use of Immunohistochimical Examination in Hemangiosarcoma." Revista de Chimie 71, no. 8 (2020): 323–26. http://dx.doi.org/10.37358/rc.20.8.8305.

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A post-mortem examination of a 5-year-old female Labrador sex female was performed to find out the cause of death. The macroscopic examination revealed a large amount of blood in the abdominal cavity (hemoperitoneum) and pericardial (hemopericard) and also the rupture of the right atrium. The spleen was taken for histopathological examination.

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21

Chaikin, Philip, and Anja Welihozkiy. "Hemangiosarcoma in a Dog: Unusual Presentation and Increased Survival Using a Complementary/Holistic Approach Combined with Metronomic Chemotherapy." Case Reports in Veterinary Medicine 2018 (2018): 1–6. http://dx.doi.org/10.1155/2018/6160980.

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This case report documents the clinical and pathologic findings in a 12-year-old terrier mix with intraocular and splenic hemangiosarcoma. Pathologic findings in both the spleen and globe were consistent with hemangiosarcoma with a low mitotic count. Initial treatment consisted of enucleation and then splenectomy followed by one cycle of conventional doxorubicin chemotherapy. Due to poor tolerance, a subsequent treatment regimen consisted of metronomic chemotherapy with chlorambucil combined with an alternative/complementary regimen of I’m-Yunity (polysaccharopeptide) and Yunnan Baiyao. Follow

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Gouveia, Bethania, Isabela Perossi, Marina da Silva, et al. "Concomitant occurrence of multicentric hemangiosarcoma and histiocytic sarcoma in a dog." Brazilian Journal of Veterinary Pathology 16, no. 1 (2023): 54–59. http://dx.doi.org/10.24070/bjvp.1983-0246.v16i1p54-59.

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Histiocytic sarcoma (HS) is uncommon malignant neoplasia of round cells with marked predilection in Rottweiler and Bernese Mountain. The disseminated form, which mainly affects the spleen, lungs, lymph nodes, bone marrow, skin, and subcutis, presents a quick and aggressive clinical behavior. Hemangiosarcoma (HAS) is a malignant neoplasm of endothelial vessel cells commonly reported to affect the right atrium of dogs' hearts. A male Rottweiler, five years old, presented flaccid paraplegia and progressive muscular atrophy in the temporal, masseter, and limbs muscles; Due to the clinical stage of

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23

Simansky, David A., Ginette Schiby, Zeev Dreznik, and Erwin T. Jacob. "Rapid progressive dissemination of hemangiosarcoma of the spleen following spontaneous rupture." World Journal of Surgery 10, no. 1 (1986): 142–44. http://dx.doi.org/10.1007/bf01656109.

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24

Turnquist, SE, LA Cohn, and A. Reed. "Splenic hemangiosarcoma and concurrent ossifying gastric adenocarcinoma in a dog." Journal of the American Animal Hospital Association 33, no. 5 (1997): 434–37. http://dx.doi.org/10.5326/15473317-33-5-434.

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An eight-year-old, spayed female, mixed Airedale terrier was presented for chronic vomiting and weight loss. Although emaciated, the dog had a pendulous abdomen with a palpable, left-sided, cranial abdominal mass. Diagnostic imaging confirmed a mass effect associated with both the spleen and stomach; it was unclear whether one mass or two was present. Necropsy confirmed the presence of two unrelated malignant abdominal neoplasms: a splenic hemangiosarcoma and an ossifying gastric adenocarcinoma.

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25

Brown, Nancy O., Amiya K. Patnaik, and E. Gregory MacEwen. "Canine hemangiosarcoma: Retrospective analysis of 104 cases." Journal of the American Veterinary Medical Association 186, no. 1 (1985): 56–58. https://doi.org/10.2460/javma.1985.186.01.56.

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SUMMARY Hemangiosarcoma was diagnosed in 104 dogs. The mean age was 10 years. Twenty-two breeds were represented. The most common were the German Shepherd Dog and Poodle. Most tumors were in the spleen (65/104). Other primary sites included the soft tissues of the trunk and extremities (18), liver (6), heart (3), and lung (2). Sixty of the dogs were examined because of rupture of the primary tumor or metastatic disease. Of the 104 dogs, 4 are alive and 100 are dead: 35 were euthanatized at the time of diagnosis, and the remaining 65 had a mean survival time of 123 days. The mean survival time

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26

Millar, Stephen L., and Kristin M. Zersen. "Diagnostic value of the ultrasonographic description of a splenic mass or nodule as cavitated in 106 dogs with nontraumatic hemoabdomen." American Journal of Veterinary Research 82, no. 12 (2021): 970–74. http://dx.doi.org/10.2460/ajvr.21.08.0130.

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Abstract OBJECTIVE To assess the diagnostic value of the ultrasonographic description of a splenic mass or nodule as cavitated in dogs with nontraumatic hemoabdomen. ANIMALS 106 dogs with a nontraumatic hemoabdomen that underwent abdominal ultrasonography and splenectomy with histologic examination of splenic lesions between 2005 and 2018. PROCEDURES Medical records were reviewed for abdominal ultrasonographic and histologic findings. Diagnostic performance of ultrasonographic description of a splenic mass or nodule as cavitated as evidence of hemangiosarcoma or any malignancy was evaluated. R

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27

Zaika, S. S., Z. V. Khomenko, S. V. Huralska, T. F. Kot, and L. V. Bezditko. "Pathomorphological characteristics of cardiac hemangiosarcoma in a dog (a clinical case)." Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies 26, no. 113 (2024): 36–41. http://dx.doi.org/10.32718/nvlvet11306.

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Hemangiosarcoma is a prevalent and lethal type of cancer in dogs. The tumour grows and spreads rapidly, often giving no warning signs to the owner until the sudden death of the dog. Hemangiosarcoma typically affects older dogs. A confirmed case study of an animal’s death shows that angiosarcoma mainly develops in dogs of a specific age and breed. The dog examined in this study was seven years old. Detecting cardiac hemangiosarcoma can be challenging, as X-ray exams may produce false-negative results, as seen in the current study. Pathological mitotic divisions are often the most recognizable s

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28

Kiyama, Shigeru, Naoki Imai, Senji Kasahara, Tuyoshi Takami, and Masanao Saio. "A Case of Hemangiosarcoma of the Spleen in which Supermass Chemotherapy was Successfully Performed." Japanese Journal of Gastroenterological Surgery 40, no. 8 (2007): 1508–13. http://dx.doi.org/10.5833/jjgs.40.1508.

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29

De Nardi, Andrigo Barboza, Cristina de Oliveira Massoco Salles Gomes, Carlos Eduardo Fonseca-Alves, et al. "Diagnosis, Prognosis, and Treatment of Canine Hemangiosarcoma: A Review Based on a Consensus Organized by the Brazilian Association of Veterinary Oncology, ABROVET." Cancers 15, no. 7 (2023): 2025. http://dx.doi.org/10.3390/cancers15072025.

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Hemangiosarcoma is a mesenchymal neoplasm originating in the endothelial cells of blood vessels; they can be classified as non-visceral and visceral types. Non-visceral hemangiosarcomas can affect the skin, subcutaneous tissues, and muscle tissues; visceral hemangiosarcomas can affect the spleen, liver, heart, lungs, kidneys, oral cavity, bones, bladder, uterus, tongue, and retroperitoneum. Among domestic species, dogs are most affected by cutaneous HSA. Cutaneous HSA represents approximately 14% of all HSA diagnosed in this species and less than 5% of dermal tumors, according to North America

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Machado, Nathália Borstmann, and Daniela Lehmen. "Neoplasias mamária e esplênica em cadela." Pubvet 18, no. 12 (2024): e1691. http://dx.doi.org/10.31533/pubvet.v18n12e1691.

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Regarding mammary and splenic neoplasms in dogs, the surgical therapeutic approach is often the method of choice, given its curative potential and the possibility of subsequent histopathological analysis. In veterinary medicine, the incidence of mammary neoplasms is high, especially in unneutered female dogs. Breast carcinoma in situ, with its histological particularities and clinical behavior, requires a careful diagnosis and a precise therapeutic approach, carrying out additional tests such as cytopathology and ultrasound to adequately define the treatment. Surgical excision, associated with

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Silva, Elisângela Olegário da, Giovana Wingeter Di Santis, Selwyn Arlington Headley, and Ana Paula Frederico Rodrigues Loureiro Bracarense. "Splenic lesions observed in 71 splenectomized dogs: a retrospective study." Semina: Ciências Agrárias 37, no. 5 (2016): 3181. http://dx.doi.org/10.5433/1679-0359.2016v37n5p3181.

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The spleen of dogs is frequently affected by disorders that vary from local and systemic origin. The difficulty in associating clinical and gross findings contributes for the choice of total splenectomy as the main treatment, leading to an impairment of the immune and hematopoietic functions. The aim of this study was to evaluate the pathological findings in the spleen of splenectomized dogs during 2008 to 2014 at a Veterinary Teaching Hospital. From the 71 cases analyzed, 97% (69/71) of the dogs were submitted to total splenectomy and 3% (2/71) to partial splenectomy. In 45 (63.4%) of these c

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Pimentel, Pedro Antônio Bronhara, Antonio Giuliano, Paweł Marek Bęczkowski, and Rodrigo Dos Santos Horta. "Molecular Profile of Canine Hemangiosarcoma and Potential Novel Therapeutic Targets." Veterinary Sciences 10, no. 6 (2023): 387. http://dx.doi.org/10.3390/vetsci10060387.

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Canine hemangiosarcoma (HSA) is a relatively common neoplasia, occurring mainly in the skin, spleen, liver and right atrium. Despite the numerous studies investigating the treatment of canine HSA, no significant improvement in survival has been achieved in the last 20 years. Advancements in genetic and molecular profiling presented molecular similarities between canine HSA and human angiosarcoma. It could therefore serve as a valuable model for investigating new and more effective treatments in people and dogs. The most common genetic abnormalities in canine HSA have been found in the phosphat

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Mendez, Susan Esther, Sarah E. Sykes Crumplar, and Amy C. Durham. "Primary Hemangiosarcoma of the Falciform Fat in Seven Dogs (2007–2015)." Journal of the American Animal Hospital Association 56, no. 2 (2020): 120–26. http://dx.doi.org/10.5326/jaaha-ms-6967.

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ABSTRACT Canine hemangiosarcoma (HSA), a malignant neoplasm of vascular endothelial or bone marrow progenitor cell origin, most often affects the spleen, heart, and liver and typically has an aggressive biologic behavior. Canine HSA arising from the falciform fat/ligament represents a rare anatomic variant, with only two reports in the veterinary literature. In this study, we describe the clinical presentation, treatment, and outcome of seven dogs with primary HSA of the falciform ligament. Histologic grade and mitotic score were not significantly associated with outcome. All dogs had the prim

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Shor, S., S. C. Helfand, E. Gorman, and C. V. LÖHR. "Diagnostic Exercise: Epithelioid Hemangiosarcoma Mimicking Metastatic Prostatic Neoplasia in a Dog." Veterinary Pathology 46, no. 3 (2009): 548–52. http://dx.doi.org/10.1354/vp.08-vp-0245-l-dex.

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A 10-year-old intact male Labrador Retriever dog was euthanized because of rapid deterioration after suffering from mild chronic cough, hematuria, acute blindness, ataxia, and lethargy. Clinical examination revealed blepharospasm and hyphema, with clear discharge from the right eye; a firm mass in an enlarged right testicle; a mass in the irregularly enlarged prostate; and nodules in the left kidney, liver, and spleen detected by abdominal sonography. Cytologic evaluation of fine needle aspirates from the prostate, testis, and kidney comprised large, clustered or individualized, anaplastic cel

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Søndenaa, Karl, Reino Heikkilä, Arne Nysted, et al. "Diagnosis of brain metastases from a primary hemangiosarcoma of the spleen with magnetic resonance imaging." Cancer 71, no. 1 (1993): 138–41. http://dx.doi.org/10.1002/1097-0142(19930101)71:1<138::aid-cncr2820710122>3.0.co;2-z.

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Paranjpe, Madhav G., Reem H. Elbekaei, Sudhir A. Shah, Michelle Hickman, Martin L. Wenk, and Eias A. Zahalka. "Historical Control Data of Spontaneous Tumors in Transgenic CByB6F1-Tg(HRAS)2Jic (Tg.rasH2) Mice." International Journal of Toxicology 32, no. 1 (2013): 48–57. http://dx.doi.org/10.1177/1091581812471565.

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The Tg.rasH2 mouse is a hemizygous transgenic mouse, approved by regulatory agencies for carcinogenicity assessment. However, the absence of a historical database for the incidence of spontaneous neoplasms has subsequently led to reluctance by some pharmaceutical companies to adopt the use of this short-term carcinogenicity assay. Our laboratory has generated a database summarizing the mortality, body weights, and the incidence of spontaneous tumors in 1420 male and female mice assigned to 26 studies conducted at our facility. In addition, we present the incidence of tumors in positive control

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Bilski, M., D. Surdyka, I. Paśnik, et al. "Adjuvant Radiochemotherapy with a 23-Month Overall Survival Time in a Patient after a Surgery due to Splenic Hemangiosarcoma Rupture: A Case Report with the Literature Review." Case Reports in Oncological Medicine 2018 (2018): 1–5. http://dx.doi.org/10.1155/2018/8672407.

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Spleen sarcoma is one of the most rare soft tissue malignancies. The annual incidence is 0.14–0.25/1,000,000 and the average age of diagnosis is 50 to 73 years. The incidence of this cancer has been increasing. Treatment of choice is surgical splenectomy, which rarely gives good results due to the aggressive course of the disease as well as the high potential for metastasis. Overall survival in primary spleen sarcomas as described by various authors is between 4 and 14 months. 80% of patients after spleen rupture do not survive 6 months. We report the case of a 42-year-old male diagnosed with

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De Lange, L., A. Dufourni, L. Lefère, L. Sonck, and G. Van Loon. "Intra-abdominal bleeding in a horse: not always of traumatic origin." Vlaams Diergeneeskundig Tijdschrift 88, no. 1 (2019): 34–38. http://dx.doi.org/10.21825/vdt.v88i1.16042.

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A nine-year-old warmblood mare was presented with clinical signs of mild colic and fever. On percutaneous ultrasound of the abdomen, a mass was identified on the left side of the abdomen between the spleen and the stomach. During examination the following day, intra-abdominal blood was observed. On rectal examination, a mass was palpated in the pelvis. The presumptive diagnosis of hematoma with intra-abdominal bleeding was made. On consecutive ultrasounds and radiographs, the mass evolved in shape and other masses were identified in the liver and the lungs. No change was noticed in the pelvic

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Dos Anjos, Denner Santos, Andreia Regis Assis, Carlos Eduardo Fonseca-Alves, and Veronica Jorge Babo-Terra. "Clinical, Pathological and Immunohistochemical Evaluation of a Primary Hemangiosarcoma in a Pinscher Dog." Acta Scientiae Veterinariae 44, no. 1 (2016): 6. http://dx.doi.org/10.22456/1679-9216.84538.

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Background: Hemangiosarcoma (HSA) is a malignant tumor that arises from the vascular endothelium affecting more often dogs than other species as cats, cows and horses. It comprises approximately 2% of all tumors in dogs. The most common primary site for the HSA in dogs is the spleen, and other locations include the right atrium, pericardium, liver andprostate. Other authors have reported this tumor in lungs, kidney, oral cavity, muscle, bone, urinary bladder, left ventricle, tongue and retroperitoneum. Due to the importance of the HSA in canine species, the aim of this study was to describe th

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Spangler, W. L., and M. R. Culbertson. "Prevalence and type of splenic diseases in cats: 455 cases (1985-1991)." Journal of the American Veterinary Medical Association 201, no. 5 (1992): 773–76. http://dx.doi.org/10.2460/javma.1992.201.05.773.

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Summary Retrospective data on the type and prevalence of splenic disease in cats were evaluated in a large number of feline splenic tissues (n = 455) submitted as surgical and necropsy specimens from private veterinary hospitals in California during a period of approximately 5.5 years. Primary and metastatic neoplasia accounted for 37% of all feline splenic lesions. Mastocytoma, lymphosarcoma, myeloproliferative disease, and hemangiosarcoma, in that order, accounted for the bulk of neoplasia. Submission of accessory splenic tissue from either the omentum or pancreas accounted for 4% (17/455),

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Liu, Yishan, Haru Yamamoto, Mohamed Elbadawy, Amira Abugomaa, Tatsuya Usui, and Kazuaki Sasaki. "Abstract 3912: Transcriptional heterogeneity between hemangiosarcoma and nodular hyperplasia using patient-derived cell lines and orthotopic xenograft model revealed new therapeutic targets." Cancer Research 85, no. 8_Supplement_1 (2025): 3912. https://doi.org/10.1158/1538-7445.am2025-3912.

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Abstract Human angiosarcoma (AS) is a rare and aggressive subtype of soft tissue sarcoma of endothelial cell origin with a propensity for local recurrence and metastasis. The optimal treatment of metastatic AS is unclear and is associated with a generally poor prognosis unless diagnosed early. The lack of insight into the pathogenesis always causes treatment failure in the clinic. To discover new treatment strategies for AS, it is necessary to develop new and relevant preclinical models for AS. Dogs commonly suffer from a similar neoplasm, called hemangiosarcoma (HA), with breeds like the gold

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Lashnits, Erin, Pradeep Neupane, Julie M. Bradley, Toni Richardson, Ricardo G. Maggi, and Edward B. Breitschwerdt. "Comparison of Serological and Molecular Assays for Bartonella Species in Dogs with Hemangiosarcoma." Pathogens 10, no. 7 (2021): 794. http://dx.doi.org/10.3390/pathogens10070794.

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Currently, a gold standard diagnostic test for Bartonella infection in dogs is lacking. This represents a critical limitation for the development and evaluation of new diagnostic tests, as well as for the diagnosis of, and research on, bartonellosis in dogs. This retrospective observational study aims to compare the results of commonly performed and newly-reported Bartonella spp. diagnostic tests in banked clinical specimens from 90 dogs with hemangiosarcoma (HSA) using composite reference standard (CRS) and random effects latent class analysis (RE-LCA) techniques. Samples from each dog were t

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Corvera, Gloria, Raúl Alegría-Morán, Federico Francisco Cifuentes, and Cristian Gabriel Torres. "Pathological Characterization and Risk Factors of Splenic Nodular Lesions in Dogs (Canis lupus familiaris)." Animals 14, no. 5 (2024): 802. http://dx.doi.org/10.3390/ani14050802.

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In dogs, the spleen is a secondary lymphoid organ that can be affected by both neoplastic and non-neoplastic nodules. In general, few studies relate histopathological diagnosis to tumor size and the number of nodules in spleen biopsies. Some of these studies are inconclusive regarding the difference between neoplastic and non-neoplastic lesions and have small sample sizes or do not consider all splenic lesions. This study aimed to characterize splenic masses and determine risk factors for spleen tumors in dogs. A total of 507 histological reports corresponding to the diagnosis of splenic lesio

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Sokic-Milutinovic, Aleksandra, Ljubisa Toncev, Tijana Glisic, et al. "Melena as a first sign of metastatic hepatic angiosarcoma: A case report." Vojnosanitetski pregled 76, no. 2 (2019): 219–23. http://dx.doi.org/10.2298/vsp160923073s.

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Introduction. Angiosarcomas are malignant tumors of vascular endothelium that may arise from different locations. Although primary hepatic angiosarcoma accounts for only 1.8% of primary liver tumors, it is the most common malignant mesenchymal tumor of the liver. We report a case of primary hepatic angiosarcoma with melena as an unusual initial manifestation of this extremely rare tumor. Case report. Forty-four-years old patient with melena was referred to our Clinic because melena was not resolved after repeated argon plasma coagulation of bleeding lesions during esophagogastroduodenoscopy in

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Suphonkhan, Jidapa, Chananchida Klaymongkol, Wijittra Khomsiri, et al. "Retrospective Study of Clinicopathological Changes and Prediction Model for Canine Vascular Neoplasms." Veterinary Sciences 11, no. 5 (2024): 189. http://dx.doi.org/10.3390/vetsci11050189.

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Vascular neoplasms, including hemangiosarcoma (HSA) and hemangioma (HMA), are more common in dogs than other domestic animal species; however, comprehensive laboratory screening tests for early diagnosis are currently limited. The aims of this study were to investigate general signalments, anatomic locations, and clinicopathological abnormalities of dogs diagnosed with vascular neoplasms and to determine the diagnostic significance of these abnormalities. Retrospective data of dogs with HMA, HSA, and healthy dogs were analyzed. Dogs with HMA and HSA were seniors, with mixed breeds being most a

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Vilmis, D. A. "Pathological characteristic of the eye changes within dogs ophthalmopathy associated with paraneoplastic syndrome." Legal regulation in veterinary medicine, no. 1 (April 8, 2024): 99–101. http://dx.doi.org/10.52419/issn2782-6252.2024.1.99.

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Ophthalmopathy associated with parneoplastic syndrome is a poorly studied pathology of the dogs eye. They occur as a result of the malignant neoplasm’s systematic exposure on the animal's body. They appear in the form of non-specific clinical signs. Main objective of the study – to study the pathomorphological changes in the dog’s eyes with malignant neo-plasms. The material for the study were 30 eyeballs enucleated in dogs in the terminal stage of cancer. Autopsy material obtained from animals was subjected to standard histological processing. As a result of histological studies, pathomorphol

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Vilmis, D. A. "Hematological manifestations of paraneoplastic syndromes in dogs." International Journal of Veterinary Medicine, no. 1 (April 2, 2024): 381–91. http://dx.doi.org/10.52419/issn2072-2419.2024.1.381.

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Hematological paraneoplastic syndromes are common but poorly studied complications in veterinary oncology, manifested by a variety of hematological changes associated with the system effects of malignant neoplasms on the animal's body. The article presents the results of studying hematological paraneoplastic syndromes, the research involves 131 dogs with spontaneous malignant neoplasms. We used a comprehensive methodological approach, including clinical, instrumental, morphological and hematological research methods. During the morphological study we found out that carcinomas were diagnosed in

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Varela, Belén, Camila Larrañaga, Kanji Yamasaki, and José Manuel Verdes. "Canine splenic tumors: Histopathological study of 9 cases in Uruguay, 2019-2020." Brazilian Journal of Veterinary Pathology 15, no. 3 (2022): 127–32. http://dx.doi.org/10.24070/bjvp.1983-0246.v15i3p127-132.

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There are no reports of what kind of spleen tumors have developed within a certain period of time in Uruguay. Therefore, we investigated spleen tumors that were surgically resected and brought into our laboratory for a year (2019-2020). As a result, 9 splenic tumors were observed. Hemangiosarcomas occurred at the highest incidence in 6 of 9 cases. In addition, 1 case each of lymphoma, fibrosarcoma, and perivascular wall tumor was observed. Furthermore, the perivascular wall tumor, which has not been reported so far, was observed in a seven years-old female Cocker Spaniel.

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Lijinsky, William, and Robert M. Kovatch. "A Study of the Carcinogenicity of Glycidol in Syrian Hamsters." Toxicology and Industrial Health 8, no. 5 (1992): 267–71. http://dx.doi.org/10.1177/074823379200800504.

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The industrial chemical glycidol is a directly acting mutagen and a broadly acting carcinogen in rats. It was administered to Syrian golden hamsters (20 male and 20 female) by gavage of 12 mg twice a week for 60 weeks. The total dose per animal was 1.45 g or 20 mmol. Survival was not different from control hamsters treated with corn oil/ethyl acetate. Of the treated males, 9 had tumors and 13 of the treated females had tumors, some of which were adrenal cortex tumors seen in controls. More tumors were seen in the glycidol-treated hamsters than in controls, but the spleen was the only notable t

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Fabris, Isabella De Almeida, Marconi Rodrigues De Farias, Juliana Werner, et al. "Vulvar Lymphangiosarcoma in a Bitch." Acta Scientiae Veterinariae 45 (June 27, 2017): 6. http://dx.doi.org/10.22456/1679-9216.86087.

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Background: Lymphangiosarcoma (LSA) is a rare, highly malignant and infiltrative neoplasm of the lymphatic endothelium of dogs and cats. It is mostly reported in medium to large breed dogs, over 5-year-old, with no sexual predisposition. Affected animals present fluctuating and diffuse swelling, covering both dermis and subcutaneous tissue, spreading through lymphatic and haematic vessels. Histologically, LSA is characterized by connected channels devoid of conspicuous haematic elements. Treatment depends on location of the neoplasm, staging, and possibility of curative surgical excision. Chem

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