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Journal articles on the topic 'Urachal cancer'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Lee, Seung Ryeol, Haeyoun Kang, Moon Hyung Kang, et al. "The Youngest Korean Case of Urachal Carcinoma." Case Reports in Urology 2015 (2015): 1–4. http://dx.doi.org/10.1155/2015/707456.

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Urachal anomalies are relatively uncommon and result from incomplete obliteration of the urachus perinatally. In children, most urachal diseases including urachal cysts and sinuses are benign, and these can sometimes become secondarily infected. Malignant involvement of the urachus is rarely reported, one in 5 million people, accounting for 0.35% to 0.7% of all bladder cancers. There are only five cases of urachal cancer diagnosed at the age of twenties in English written literature. Age at the diagnosis of urachal carcinoma is important to understand pathogenetic transition from benign to mal

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2

Elser, Christine, Joan Sweet, Sendhil K. Cheran, Masoom A. Haider, Michael Jewett, and Srikala S. Sridhar. "A case of metastatic urachal adenocarcinoma treated with several." Canadian Urological Association Journal 6, no. 1 (2013): 27. http://dx.doi.org/10.5489/cuaj.336.

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Urachal cancer is a rare form of bladder cancer that arises fromthe urachus, a vestigial musculofibrous band that extends from thedome of the bladder to the umbilicus. Urachal cancer often presentsat an advanced stage and has a dismal prognosis. We presenta case of a young woman with urachal cancer that recurred rapidlypost-partial cystectomy. The patient was treated with up to 6 different chemotherapy regimens, including an oral antiangiogenic drug as part of a clinical trial. Our case illustrates the aggressive nature of this disease, the difficulty in accessing drugs for the treatment of ra

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3

Kumari, Ajitha, Mohan P. Sam, and Sany Philip. "An unusual case of painless hematuria - A rare case report and review of literature." Journal of Pathology of Nepal 13, no. 2 (2023): 2111–13. http://dx.doi.org/10.3126/jpn.v13i2.46584.

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Urachal carcinoma is a rare and aggressive cancer arising from a persistent urachus which is a remnant of the allantois that extends from blader to umblicus.This is a case report of urachal carcinoma in a 37 year old male who presented with gross painless hematuria . On radiological investigation he was found to have a tumor involving dome of bladder and urachal remnant. Cystoscoic biopsy suggested carcinoma. Partial cystectomy with enblock removal of urachus and umblicus was done. On cutting the specimen through umblicus the urachal remnant was identified very well with a tumor from distal ur

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4

Sah, Anjali, GS Triveni, and SH Chandrashekhara. "Case series of urachal adenocarcinoma: Imaging features." Journal of Cancer Research and Therapeutics 20, no. 3 (2023): 1057–60. http://dx.doi.org/10.4103/jcrt.jcrt_2382_21.

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ABSTRACT Urachal adenocarcinoma is an unusual and aggressive form of bladder cancer that arises from urachus, a midline fibrous remnant of allantois. Experience with diagnosing them is limited and differentiating urachal adenocarcinoma from other urachal pathologies like infected urachal cysts may be difficult at times. Differentials of urachal anomalies can be narrowed down by proper assessment of patient demographics, clinical details, lesion morphology, and imaging findings. With this case series of five patients of urachal adenocarcinoma, we have tried describing their clinical manifestati

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5

Nyushko, K. M., B. Ya Alekseev, A. S. Kalpinsky, and A. D. Kaprin. "Urachal cancer." Onkologiya. Zhurnal imeni P.A.Gertsena 4, no. 3 (2015): 43. http://dx.doi.org/10.17116/onkolog20154343-47.

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6

Fitzgerald, E., and M. Pirani. "Urachal cancer." British Journal of Radiology 58, no. 696 (1985): 1230. http://dx.doi.org/10.1259/0007-1285-58-696-1230.

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7

Bazaev, V. V., N. V. Bychkova, A. A. Morozov, A. P. Morozov, and Е. V. Smirnova. "Complications of urachal cyst: aspects of diagnosis and treatment in adult patients." Experimental and Сlinical Urology 13, no. 4 (2020): 114–19. http://dx.doi.org/10.29188/2222-8543-2020-13-4-114-119.

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Introduction. Urachal cyst is a congenital malformation, presented by a closed cavity filled with serous fluid in the urachus. Although a morphological picture of the urachal malformation is well known and is quite common in different patients, each case with a complicated cyst has unique clinical features, requiring a differential diagnosis. Aim. To demonstrate differential diagnosis of two cases with congenital urachal malformations, presenting different clinical features. Materials and methods. The study describes 2 clinical cases. A 65-year-old patient presented with non-intensive hematuri

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8

Sun, Maxine, Guillermo de Velasco, Christian P. Meyer, et al. "Urachal versus nonurachal adenocarcinomas of the bladder: A population-based report." Journal of Clinical Oncology 34, no. 2_suppl (2016): 450. http://dx.doi.org/10.1200/jco.2016.34.2_suppl.450.

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450 Background: Previous studies are inconclusive on whether urachal vs. non-urachal adenocarcinomas of the urinary bladder have different prognoses. Our objective was to assess survival differences between urachal vs. non-urachal adenocarcinomas in light of evolving treatment strategies over the past years. Methods: The Surveillance, Epidemiology, and End Results (SEER) database was used to identify patients with a diagnosis of adenocarcinoma of the urinary bladder between years 1988 and 2012. The variable of interest was urachal vs. non-urachal adenocarcinomas. Kaplan-Meier curves and log-ra

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9

Ter-Ovanesov, M. D., D. M. Yagudaev, A. A. Gritskevich, A. V. Umyarova, and V. A. Bezhenar. "The organ sparing management of a patient with urachus cancer in conditions of comorbidity." Research and Practical Medicine Journal 11, no. 1 (2024): 70–77. http://dx.doi.org/10.17709/2410-1893-2024-11-1-6.

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Malignant tumors of the urachus are extremely rare. The frequency of urachal malignancy makes 1: 5 000 000 cases, which is 0.35–1.2 % of all the cases of bladder cancer. The small series of observations described in the literature do not allow us to formulate statistically reliable and unambiguously recommended statements about the optimal methods of diagnostics and treatment of this pathology. The diagnosis of urachus diseases is often challenging. This is associated with both the asymptomatic course and the variety of clinical flow of the disease. The treatment strategies are also largely am

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10

Kardos, Jordan, Sara E. Wobker, Michael E. Woods, et al. "Comprehensive Molecular Characterization of Urachal Adenocarcinoma Reveals Commonalities With Colorectal Cancer, Including a Hypermutable Phenotype." JCO Precision Oncology, no. 1 (November 2017): 1–12. http://dx.doi.org/10.1200/po.17.00027.

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Purpose Urachal adenocarcinoma is a rare type of primary bladder adenocarcinoma that comprises less than 1% of all bladder cancers. The low incidence of urachal adenocarcinomas does not allow for an evidence-based approach to therapy. Transcriptome profiling of urachal adenocarcinomas has not been previously reported. We hypothesized that an in-depth molecular understanding of urachal adenocarcinoma would uncover rational therapeutic strategies. Patients and Methods We performed targeted exon sequencing and global transcriptome profiling of 12 urachal tumors to generate a comprehensive molecul

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11

Van Allen, Joshua. "A rare case of urachal adenocarcinoma with bone marrow metastasis." BMJ Case Reports 14, no. 4 (2021): e242315. http://dx.doi.org/10.1136/bcr-2021-242315.

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Urachal cancer is a rare and aggressive cancer that often presents in advanced stages. Given the rarity of this malignancy, medical case studies provide one of the few sources of literature available through which clinicians can guide medical management. Surgery is widely considered to be the mainstay of therapy when disease is localised and surgically resectable, therefore most current case studies on urachal cancer focus on surgical management, occasionally with adjuvant chemotherapy. However, few case studies discuss chemotherapy alone in the treatment of metastatic disease. Most studies in

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12

Inci, Osman, Ebru Tastekin, Hakan Genchellac, Ozcan Arabaci, Serap Isler, and Irfan Huseyin Atakan. "A Case of Urachal Malacoplakia that Seems Like Urachal Cancer." Balkan Medical Journal 32, no. 1 (2015): 114–17. http://dx.doi.org/10.5152/balkanmedj.2015.15053.

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13

Li, Guanghui, Jianguo Hou, Songxi Qian, Guangbin Xia, and Yongjiang Ma. "Primary urachal adenocarcinoma." Chinese Journal of Cancer Research 10, no. 3 (1998): 230–32. http://dx.doi.org/10.1007/bf02948370.

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14

Reddy, Akshay G., Andrew D. Sparks, Michael Helbig, and Michael Joseph Whalen. "The impact of adjuvant chemotherapy on oncologic outcomes of patients with locally advanced bladder adenocarcinoma: An analysis of the National Cancer Database." Journal of Clinical Oncology 39, no. 6_suppl (2021): 495. http://dx.doi.org/10.1200/jco.2021.39.6_suppl.495.

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495 Background: The relatively poor prognosis associated with locally advanced bladder adenocarcinoma necessitates investigation of the utility of adjuvant chemotherapy (AC) and risk stratification of those who would benefit from such systemic therapy. This study seeks to evaluate the oncologic and surgical outcomes of those with locally advanced disease treated with and without AC. Methods: A retrospective cohort analysis was performed using the National Cancer Database from 2006 to 2016. Patients with non-metastatic locally advanced pT3-4 or pT(any)N1-3 primary bladder adenocarcinoma who rec

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15

Abidin, Zainal Adwin Zainal, Mohamed Arif Hameed Sultan, Firdaus Hayati, and Zulkifli Zainuddin. "Aggressive Recurrent Urachal Adenocarcinoma : A Case Report And Review Of The Literature." Bangladesh Journal of Medical Science 20, no. 4 (2021): 911–13. http://dx.doi.org/10.3329/bjms.v20i4.54151.

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Recurrent urachal adenocarcinomas are rare. It is commonly associated with poor prognosis. A 51-year-old woman underwent a partial cystectomy for urachal cancer in 2014. She was well throughout follow-up with annual cystoscopies. She presented with a 1-month history of rapidly progressive suprapubic mass and hematuria. A contrasted computed tomography scan of the thorax, abdomen and pelvis showed a large mixed solid cystic tumour at the right lumbar region, suprapubic area and also at the pouch of Douglas. She refused surgical extirpation and now on chemotherapy. Urachal adenocarcinoma is rare

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16

La Fianza, Alfredo, Roberto Scalamogna, Maria Sole Prevedoni Gorone, Bruno Rovereto, Silvia Brugnatelli, and Alessandra Viglio. "Unusual CT Findings in Urachus Carcinoma with an Extensive and Atypical Pattern of Metastasis. A Case Report." Tumori Journal 91, no. 3 (2005): 273–75. http://dx.doi.org/10.1177/030089160509100314.

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Carcinoma of the urachus is very rare. Usually it has a typical appearance on computed tomography, with calcifications in a midline supravesical mass, but advanced stages of this neoplasm require malignancy evaluation that is not easy to establish. We report a case of a urachal tumor where CT scan did not properly assess the response to chemotherapy, while it did show an uncommon metastatic localization in the laterocervical soft tissues.

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17

MIKATA, Noriharu, Sadao IMAO, and Kiyoshi NAKAMURA. "A CASE REPORT OF URACHAL SMALL CYST COMPLICATED BY A URACHAL CANCER." Journal of the Japanese Practical Surgeon Society 57, no. 12 (1996): 3067–68. http://dx.doi.org/10.3919/ringe1963.57.3067.

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18

Reis, H., and T. Szarvas. "Urachal cancer—current concepts of a rare cancer." Der Pathologe 40, S1 (2019): 31–39. http://dx.doi.org/10.1007/s00292-018-0516-9.

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19

Henly, David R., George M. Farrow, and Horst Zincke. "Urachal cancer: Role of conservative surgery." Urology 42, no. 6 (1993): 635–39. http://dx.doi.org/10.1016/0090-4295(93)90526-g.

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20

Molina, Julian R., J. Fernando Quevedo, Alfred F. Furth, Ronald L. Richardson, Horst Zincke, and Patrick A. Burch. "Predictors of survival from urachal cancer." Cancer 110, no. 11 (2007): 2434–40. http://dx.doi.org/10.1002/cncr.23070.

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21

Xue, Li-yan, Ning LÜ, Zu-gen He, Dong-mei Lin, and Xiu-yun Liu. "Urachal carcinoma in bladder." Chinese Journal of Cancer Research 16, no. 1 (2004): 55–57. http://dx.doi.org/10.1007/bf02974868.

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22

Andersen, Jeannette D., Knud Fabrin, Astrid Petersen, and Helle D. Zacho. "18F-FDG PET/CT in a Case of Urothelial Carcinoma in the Urachus Presenting as Colon Cancer." Diagnostics 12, no. 1 (2021): 31. http://dx.doi.org/10.3390/diagnostics12010031.

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Urachal cancer arises from an embryologic remnant of the urogenital sinus and allantois and accounts for approximately 1% of bladder malignancies. The most encountered histologic subtype is adenocarcinoma. We present a 76-year-old man suspected to have an advanced sigmoid cancer infiltrating nearby organs. A supplemental 18F-FDG PET/CT showed high tracer uptake in a tumorous process coherent with the dome of the bladder wall involving the sigmoid colon. Cystoscopy revealed a normal bladder wall, except for a small edematous area in the anterior bladder. Biopsies from the sigmoid colon and tran

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23

Boscaino, Amedeo, Patrizia Sapere, and Bruno Marra. "Carcinoma of the Urachus. Report of a Case." Tumori Journal 75, no. 5 (1989): 518–19. http://dx.doi.org/10.1177/030089168907500526.

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The authors report a case of urachal carcinoma of a 60 year old woman of particular interest because of the clinical history, biological behavior and histotype. The tumor presented as an umbilical mass of 25 cm which had slowly increased during 20 years without evident clinical signs or infiltration of the peritoneum and abdominal organs. Histologic findings revealed an adenosquamous carcinoma, which represents less than 5 % of urachal neoplasms. Surgical excision is the treatment. The prognosis is poor because of regional recurrence and metastases. The authors review the literature analyzing

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24

Lee, Jae-Lyun, Inkeun Park, Shinkyo Yoon, et al. "A multicenter phase II study of modified FOLFIRINOX for first-line treatment for advanced urachal cancer (ULTMA; KCSG GU20-03)." Journal of Clinical Oncology 42, no. 16_suppl (2024): 4510. http://dx.doi.org/10.1200/jco.2024.42.16_suppl.4510.

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4510 Background: Systemic therapy is used for advanced urachal cancer that is not amenable to surgery. However, due to the low incidence of this disease, prospective clinical trials have not been conducted and there is no established standard of care. 5-FU, oxaliplatin, and irinotecan have synergistic mechanisms of action, do not overlap in major side effects, and all have the potential to be effective in urachal cancer. The ongoing ULTIMA trial (NCT04611724) is evaluating the efficacy and safety of modified FOLFIRINOX in patients with advanced urachal cancer. Methods: Patients with recurrent

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25

Behrendt, Mark A., and Bas W. G. van Rhijn. "Genetics and biological markers in urachal cancer." Translational Andrology and Urology 5, no. 5 (2016): 655–61. http://dx.doi.org/10.21037/tau.2016.04.01.

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26

Reis, Henning, Ulrich Krafft, Christian Niedworok, et al. "Biomarkers in Urachal Cancer and Adenocarcinomas in the Bladder: A Comprehensive Review Supplemented by Own Data." Disease Markers 2018 (2018): 1–21. http://dx.doi.org/10.1155/2018/7308168.

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Urachal cancer (UrC) is a rare but aggressive cancer. Due to overlapping histomorphology, discrimination of urachal from primary bladder adenocarcinomas (PBAC) and adenocarcinomas secondarily involving the bladder (particularly colorectal adenocarcinomas, CRC) can be challenging. Therefore, we aimed to give an overview of helpful (immunohistochemical) biomarkers and clinicopathological factors in addition to survival analyses and included institutional data from 12 urachal adenocarcinomas. A PubMed search yielded 319 suitable studies since 1930 in the English literature with 1984 cases of UrC

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27

Uthman, A. K. A. A., C. Khoo, N. Taylor, and E. Bolton. "Urachal cancer: Experience of a high-volume bladder cancer centre." European Urology 83 (February 2023): S1577—S1579. http://dx.doi.org/10.1016/s0302-2838(23)01129-6.

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28

Uthman, Abdulla, Christopher C. Khoo, Jiten Jaipuria, et al. "Urachal Cancer: Experience of a High-Volume Bladder Cancer Center." Open Journal of Urology 13, no. 07 (2023): 201–13. http://dx.doi.org/10.4236/oju.2023.137025.

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29

Findakly, Dawood, and Jue Wang. "Primary urachal carcinoma: A systematic review." Journal of Clinical Oncology 39, no. 15_suppl (2021): e16502-e16502. http://dx.doi.org/10.1200/jco.2021.39.15_suppl.e16502.

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e16502 Background: Primary urachal carcinoma (PUC) is a rare cancer of unknown definite cause, and various treatment approaches given its very low incidence and the scarcity of prospective studies. This review aimed to assess the clinicopathologic findings, treatment, and outcomes of PUC cases reported in the literature. Methods: We performed PubMed, Medline, ScienceDirect, and Scopus literature search for "urachus cancer" in adults (19+ years) from data inception through 2020, pooled with six cases from our institution. Results: We included 152 patients with a male: female ratio of 1.61:1 and

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30

Tiutiucă, Răzvan Călin, Alina Ioana Năstase Pușcașu, Elena Țarcă, et al. "Urachal Carcinoma, An Unusual Possibility of Hematuria; Case Report and Literature Review." Diagnostics 12, no. 8 (2022): 1892. http://dx.doi.org/10.3390/diagnostics12081892.

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Urachal cancer is very rare, accounting for only 0.5–2% of bladder-associated malignancies and 0.01% of all cancers in adults. It has an insidious appearance, an aggressive behavior and a poor prognosis. The most common symptoms are hematuria and the presence of a palpable hypogastric mass. The scarcity of cases and the low number of studies carried out explains the lack of an evidence-based management strategy, but it seems that surgical treatment (open, laparoscopy or robot-assisted) represents the gold standard, while neoadjuvant and adjuvant chemotherapy or radiotherapy has a limited impac

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31

Modos, O., D. Keresztes, P. Nyirády, et al. "Molecular and therapeutic aspects of advanced urachal cancer." European Urology Supplements 16, no. 11 (2017): e2840. http://dx.doi.org/10.1016/s1569-9056(17)31982-6.

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32

Hayashi, Tatsuro, Takeshi Yuasa, Sho Uehara, et al. "Clinical outcome of urachal cancer in Japanese patients." International Journal of Clinical Oncology 21, no. 1 (2015): 133–38. http://dx.doi.org/10.1007/s10147-015-0866-8.

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33

Colombo Jr., Jose R., Mihir Desai, David Canes, et al. "Laparoscopic partial cystectomy for urachal and bladder cancer." Clinics 63, no. 6 (2008): 731–34. http://dx.doi.org/10.1590/s1807-59322008000600004.

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34

Fitzgerald, E. J., and M. Pirani. "Computed tomography and ultrasound of a urachal cancer." British Journal of Radiology 58, no. 685 (1985): 88–90. http://dx.doi.org/10.1259/0007-1285-58-685-88.

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35

Kume, Haruki, Kyoichi Tomita, Sayuri Takahashi, and Keiko Fukutani. "Irinotecan as a New Agent for Urachal Cancer." Urologia Internationalis 76, no. 3 (2006): 281–82. http://dx.doi.org/10.1159/000091635.

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36

Taniguchi, Fuminori, Eriko Hirakawa, Yukihiro Azuma, Chihiro Uejima, Keigo Ashida, and Tasuku Harada. "Primary Umbilical Endometriosis: Unusual and Rare Clinical Presentation." Case Reports in Obstetrics and Gynecology 2016 (2016): 1–4. http://dx.doi.org/10.1155/2016/9302376.

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Primary umbilical endometriosis is a rare disorder and is defined as the presence of ectopic endometrial tissue within the umbilicus. A patient with painful mass in the umbilicus during menstrual period is studied in this paper. The possibility of subcutaneous endometriosis should be considered when an umbilical mass is detected despite the absence of previous surgery. In this case, urachal cancer, urachal remnant, umbilical endometriosis, and its malignant transformation were among the diseases considered in the differential diagnosis. Complete excision and histology are necessary to obtain a

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37

Liu, Haoyang, Junru Chen, Zhenhua Liu, Pengfei Shen, and Hao Zeng. "Occurrence and prognostic significance of different histology relative to urinary tract tumors: A SEER population-based study." Journal of Clinical Oncology 41, no. 6_suppl (2023): 485. http://dx.doi.org/10.1200/jco.2023.41.6_suppl.485.

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485 Background: To evaluate the prevalence and prognostic value of variant histology in urinary tract tumors according to primary location and metastatic status. Methods: Using the Surveillance, Epidemiology, and End Results registry (SEER, 2004-2015) databases, patients with urinary tract tumors were identified. Propensity Score Matching was used to balance the clinicopathologic features between different histologies. Kaplan-Meier plots were used to compare the cancer specific survival (CSS) and overall survival (OS) of different histologies. The cox regression analysis were also applied. Res

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38

TAKEUCHI, Nobumichi, Akira KUBO, Toshimichi TAKAHASHI, and Ryouto SUZUKI. "A CASE OF URACHAL CANCER SYNCHRONOUSLY ASSOCIATED WITH EARLY GASTRIC CANCER." Journal of the Japanese Practical Surgeon Society 53, no. 1 (1992): 183–88. http://dx.doi.org/10.3919/ringe1963.53.183.

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39

Cigliola, Antonio, Alina Basnet, Joseph M. Jacob, et al. "Urachal (U) and non-urachal (NU) adenocarcinomas (adenoCA) of the bladder: A comparative comprehensive genomic profiling (CGP) study." Journal of Clinical Oncology 42, no. 4_suppl (2024): 535. http://dx.doi.org/10.1200/jco.2024.42.4_suppl.535.

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535 Background: Although both U and NU bladder adenoCA share several histological similarities, they differ in site of origin and optimal treatment paradigms. They are both relatively resistant to conventional cisplatin-based chemotherapy and surgical resection is the only curative option for organ-confined stages. The purpose of this study is to investigate the differences of genomic alterations (GA) between these tumor types, with the aim of identifying potential therapy targets. Methods: A total of 133 U and 328 NU adenoCA were analyzed from a series of Formalin-Fixed Paraffin-Embedded tiss

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40

Pavelescu, Cristian, Alexandra Pavelescu, Cristian Surcel, et al. "Surgical management of urachal tumors: Can the umbilicus be sparred in localized disease?" Rare Tumors 11 (January 2019): 203636131984728. http://dx.doi.org/10.1177/2036361319847283.

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Urachal adenocarcinoma represents the third most common histological type of non-urotelial bladder cancer. A very low incidence of this disease and the lack of prospective studies have led to a rich and heterogeneous treatment history. Currently, the standard of care for these patients is represented by partial cystectomy en bloc with resection of the urachal ligament and total omphalectomy. The aim of this article is to present our experience and results in the management of patients with urachal adenocarcinoma. Between 2005 and 2015, 16 patients have undergone surgical treatment for urachal

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41

Wiam, Belkaid, Zineb Hamilou, Denis Soulieres, et al. "Comprehensive and epidemiological characterization of urachal adenocarcinoma: A pan-Canadian collaboration." Journal of Clinical Oncology 37, no. 7_suppl (2019): 516. http://dx.doi.org/10.1200/jco.2019.37.7_suppl.516.

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516 Background: Urachal cancer is a rare form of urothelial cancer representing 0,1-0,2% of bladder cancers. The exact underlying cause of urachal cancer is still widely unknown and there is much speculation on multiple factors such as genetic and environmental ones that may play a role. Moreover, given the lack of treatment consensus, we proposed the first study that assesses the clinical, genetic and molecular features of this disease in Canada. Methods: This ongoing study is recruiting in Canadian centers from the year 2005 onwards. The clinical database is constructed using the hospital el

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42

Połom, Wojciech, Wojciech Cytawa, Anna Polom, Edyta Szurowska, Piotr Lass, and Marcin Matuszewski. "Radionuclide-guided sentinel lymph node mapping in urachal cancer." Advances in Clinical and Experimental Medicine 30, no. 2 (2021): 203–10. http://dx.doi.org/10.17219/acem/130600.

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43

Yanagihara, Yutaka, Nozomu Tanji, Noriyoshi Miura, et al. "Modified FOLFOX6 Chemotherapy in Patients with Metastatic Urachal Cancer." Chemotherapy 59, no. 6 (2013): 402–6. http://dx.doi.org/10.1159/000362400.

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44

Nagy, Nikolett, Henning Reis, Boris Hadaschik, et al. "Prevalence of APC and PTEN Alterations in Urachal Cancer." Pathology & Oncology Research 26, no. 4 (2020): 2773–81. http://dx.doi.org/10.1007/s12253-020-00872-6.

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45

Park, J. Y., T. J. Jeon, M. J. Ryu, and W. C. Shin. "Urachal cancer with direct caecal invasion: differential diagnosis from primary colon cancer." Case Reports 2014, jun05 1 (2014): bcr2013200772. http://dx.doi.org/10.1136/bcr-2013-200772.

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46

Schnur, Jessica, Scott Nguyen, Celia Divino, Tomas Heimann, and Claudia Vidal. "Coexisting Rectal and Urachal Carcinoma: A Case Report." American Journal of Clinical Oncology 32, no. 2 (2009): 220–21. http://dx.doi.org/10.1097/01.coc.0000230170.25322.cd.

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47

BABA, Hironobu, Chihiro ONO, Fukuichiro ORITA, Tadao MURAYAMA, Naoaki HOSHINO, and Yoshinobu NISHIOKA. "A Case of Transverse Colo-urachal Fistula with Cecal Cancer." Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association) 77, no. 5 (2016): 1150–54. http://dx.doi.org/10.3919/jjsa.77.1150.

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48

Hladun, Taras, Jakub Ratajczak, and Maciej Salagierski. "Calcified Urachal Cancer Managed by Partial Cystectomy: A Case Report." Research and Reports in Urology Volume 13 (October 2021): 745–48. http://dx.doi.org/10.2147/rru.s330765.

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49

Guerreiro, I., S. Alves, J. Lobo, et al. "Urachal carcinoma: A retrospective analysis of a reference cancer center." European Urology Supplements 15, no. 13 (2016): e1686. http://dx.doi.org/10.1016/s1569-9056(16)30465-1.

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Kim, In Kyong, Joo Yong Lee, Jong Kyou Kwon, et al. "Prognostic Factors for Urachal Cancer: A Bayesian Model-Averaging Approach." Korean Journal of Urology 55, no. 9 (2014): 574. http://dx.doi.org/10.4111/kju.2014.55.9.574.

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