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Journal articles on the topic 'Elst'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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1

Butman, John A., Edjah Nduom, H. Jeffrey Kim, and Russell R. Lonser. "Imaging detection of endolymphatic sac tumor–associated hydrops." Journal of Neurosurgery 119, no. 2 (August 2013): 406–11. http://dx.doi.org/10.3171/2013.2.jns12608.

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Object To determine if physiologically based MRI sequences can be used to detect endolymphatic sac tumor (ELST)–associated hydrops, the authors performed contrast-enhanced delayed FLAIR imaging in consecutive ELST patients with clinical findings consistent with hydrops. Methods Consecutive patients with von Hippel-Lindau (VHL) disease and clinical findings of endolymphatic hydrops and ELSTs underwent contrast-enhanced delayed FLAIR MRI. Clinical, audiological, operative, and imaging findings were analyzed. Results Three patients (2 male, 1 female) with 4 ELSTs (1 patient had bilateral ELSTs) were identified who had clinical findings consistent with endolymphatic hydrops. Computed tomography and MRI evidence of an ELST was found in all patients. Their mean age at initial evaluation was 39.7 years (range 28–51 years). All patients demonstrated progressive sensorineural hearing loss that was associated with episodic vertigo and tinnitus. Contrast-enhanced delayed FLAIR MRI clearly demonstrated dilation of the membranous labyrinth consistent with hydrops in the affected ears but not the unaffected ears. Two patients underwent resection of the associated ELST that resulted in stabilization of progressive hearing loss, as well as amelioration of tinnitus and vertigo. Conclusions Contrast-enhanced delayed FLAIR MRI can be used to detect ELST-associated hydrops. Noninvasive MRI detection of hydrops can permit earlier detection of ELSTs in patients with VHL disease and provides direct insight into a mechanism that underlies ELST-associated audiovestibular morbidity.

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2

Vogel, Timothy W. A., Alexander O. Vortmeyer, Irina A. Lubensky, Youn-Soo Lee, Makoto Furuta, Barbara Ikejiri, H. Jeffrey Kim, Russell R. Lonser, Edward H. Oldfield, and Zhengping Zhuang. "Coexpression of erythropoietin and its receptor in endolymphatic sac tumors." Journal of Neurosurgery 103, no. 2 (August 2005): 284–88. http://dx.doi.org/10.3171/jns.2005.103.2.0284.

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Object. Von Hippel—Lindau (VHL) disease is characterized by multiple tumors in specific organs. The cell of origin and the reason for the particular organ distribution of the tumors remains unknown. Endolymphatic sac tumor (ELST) is one of the lesions associated with VHL disease. Data from previous studies of VHL disease—associated hemangioblastomas (HBs) and renal cell carcinomas (RCCs) have indicated that VHL gene deficiency causes coexpression of erythropoietin (Epo) and its receptor (Epo-R), which facilitates tumor growth. Methods. The authors studied ELSTs from five patients with VHL germline mutations. Analysis of the five ELST samples revealed loss of the wild-type allele, consistent with Knudson's two-hit hypothesis for tumorigenesis. All five ELST specimens were characterized microscopically and by immunohistochemical analysis. Coexpression of Epo and Epo-R was found in all five tumors on immunohistochemical studies and confirmed through reverse transcription—polymerase chain reaction and Western blot analysis. Conclusions. Expression of Epo appears to be a result of VHL gene deficiency, whereas the simultaneous coexpression of Epo-R may reflect a developmental mechanism of tumorigenesis. Coexpression of Epo and Epo-R in ELSTs together with the morphological and genetic similarities of these lesions with other VHL disease—associated tumors indicates that VHL disease—associated tumors in different organs share common pathogenetic pathways.

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3

de Marneffe, Robert. "Edouard Vander Elst (1916–1987)." International Orthopaedics 13, no. 4 (November 1989): 289. http://dx.doi.org/10.1007/bf00268514.

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4

Bambakidis, Nicholas C., Tina Rodrigue, Cliff A. Megerian, and Robert A. Ratcheson. "Endolymphatic sac tumor metastatic to the spine." Journal of Neurosurgery: Spine 3, no. 1 (July 2005): 68–70. http://dx.doi.org/10.3171/spi.2005.3.1.0068.

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✓ Endolymphatic sac tumors (ELSTs) are aggressive papillary lesions of the temporal bone. Although histologically benign, they may exhibit invasive growth and destruction of the skull base. Patients generally present with symptoms referable to the lesion's location within the middle or posterior cranial fossa. Although well characterized as a distinct entity, ELSTs involved in metastatic dissemination have never been reported. In the present report the authors describe a case of ELST metastatic to the spine treated with resection.

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5

Richards, P. S., and A. G. Clifton. "Endolymphatic sac tumours." Journal of Laryngology & Otology 117, no. 8 (August 2003): 666–69. http://dx.doi.org/10.1258/002221503768200075.

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We present a case of a papillary tumour of the petrous bone. The established terminology for this rare neoplasm is endolymphatic sac tumour (ELST) but the true origin remains controversial. ELSTs are associated with von Hippel-Lindau disease. They are locally invasive, highly vascular and often require endovascular embolization prior to surgery. Both radiologically and histologically ELSTs are easily mistaken for other more common tumours such as paragangliomas and renal or papillary thyroid carcinoma metastases. This is important because local excision is curative.

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Ferri, Emanuele, Maurizio Amadori, Enrico Armato, and Ida Pavon. "A Rare Case of Endolymphatic Sac Tumour: Clinicopathologic Study and Surgical Management." Case Reports in Otolaryngology 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/376761.

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Objective. Endolymphatic sac tumor (ELST) is a rare neoplasm arising from the intrapetrous portion of the endolymphatic sac, either isolated or in association with the von Hippel-Lindau disease. We report a sporadic case of ELST with an overview of the literature and a discussion of clinic-radiological, histopathologic, and surgical findings.Case Report. A young woman presented with a progressive hearing loss in the left ear. Otoscopy showed a reddish, bleeding hypotympanic mass. CT demonstrated an expansile lytic mastoid lesion extending to the middle ear, with bone erosion. MRI confirmed a lesion of increased signal on T1-weighted sequences. The patient underwent a canal wall-down tympanoplasty with complete removal of the tumor. Histopathology was consistent with a papillary ELST. Immunohistochemistry was positive for cytokeratin and chromogranin A.Conclusion. This paper highlights the rarity of ELST, the need for an accurate neuroradiological and immunohistochemical study at the early stages, and the timeliness of surgical treatment.

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7

Jagannathan, Jay, John A. Butman, Russell R. Lonser, Alexander O. Vortmeyer, Christopher K. Zalewski, Carmen Brewer, Edward H. Oldfield, and H. Jeffrey Kim. "Endolymphatic sac tumor demonstrated by intralabyrinthine hemorrhage." Journal of Neurosurgery 107, no. 2 (August 2007): 421–25. http://dx.doi.org/10.3171/jns-07/08/0421.

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✓ Endolymphatic sac tumors (ELSTs) are locally invasive neoplasms that arise in the posterior petrous bone and are associated with von Hippel–Lindau (VHL) disease. These tumors cause symptoms even when microscopic in size (below the threshold for detectability on imaging studies) and can lead to symptoms such as hearing loss, tinnitus, vertigo, and facial nerve dysfunction. While the mechanisms of audiovestibular dysfunction in patients harboring ELSTs are incompletely understood, they have critical implications for management. The authors present the case of a 33-year-old man with VHL disease and a 10-year history of progressive tinnitus, vertigo, and left-sided hearing loss. Serial T1-weighted magnetic resonance (MR) imaging and computed tomography scans revealed no evidence of tumor, but fluid attenuated inversion recovery (FLAIR) MR imaging sequences obtained after hearing loss demonstrated evidence of left intralabyrinthine hemorrhage. On the basis of progressive disabling audiovestibular dysfunction (tinnitus and vertigo), FLAIR imaging findings, and VHL disease status, the patient underwent surgical exploration of the posterior petrous region, and a small (2-mm) ELST was identified and completely resected. Postoperatively, the patient had improvement of the tinnitus and vertigo. Intralabyrinthine hemorrhage may be an early and the only neuroimaging sign of an ELST in patients with VHL disease and audiovestibular dysfunction. These findings support tumor-associated hemorrhage as a mechanism underlying the audiovestibular dysfunction associated with ELSTs.

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8

Schipper, J., W. Maier, S. Rosahl, A. Berlis, and R. Laszig. "Stadiengerechte Chirurgie von Saccus-endolymphaticus-Tumoren (ELST)." Laryngo-Rhino-Otologie 83, no. 8 (August 2004): 493–500. http://dx.doi.org/10.1055/s-2004-814395.

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9

Rousselot, P., C. Dumas, and F. Merlin. "Near-infrared spectroscopy of 133P/Elst-Pizarro." Icarus 211, no. 1 (January 2011): 553–58. http://dx.doi.org/10.1016/j.icarus.2010.08.025.

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10

Fernandopulle, Nithya, Stephanie Zhang, Paul Soeding, and Graham Mackay. "Reply to correspondence of Elst et al." Clinical & Experimental Allergy 51, no. 7 (March 8, 2021): 978–79. http://dx.doi.org/10.1111/cea.13844.

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11

Dusar, M., R. Dreesen, L. Indeherberge, E. Defour, and R. Meuris. "The origin of ‘tauw’, an enigmatic building stone of the Mergelland: a case study of the Hesbaye region, southwest of Maastricht (Belgium)." Netherlands Journal of Geosciences - Geologie en Mijnbouw 90, no. 2-3 (November 2011): 239–58. http://dx.doi.org/10.1017/s001677460000113x.

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AbstractThe origin of a peculiar type of silicified limestone with nodular flints used in parish churches at Sluizen and Vreren, south of Tongeren (province of Limburg, Belgium), has now been elucidated by the discovery of the same rock type in its natural setting, namely the silicified top of the Cretaceous which underlies Clay-with-flints (‘flint eluvium’) and Oligocene sands in a disused quarry at Elst, municipality of Riemst (Limburg, Belgium). Co-operation between professional geologists and amateur palaeontologists has allowed to characterise this rock type, here referred to as ‘Elst tauw’, both petrographically and palaeontologically. The rich echinoid fauna has also been assessed, on the basis of a comparison with assemblages from the Clay-with-flints at Halembaye (Haccourt/Lixhe, province of Liège, Belgium) and at Zichen-Eben Emael in the Hesbaye region. P.J. Felder's ecozones, based on bioclast assemblages, substantiated by analyses of petrographical biofacies features of the original calcarenite, has allowed lithostratigraphic correlation of the ‘Elst tauw’ with the ‘Roosburg block’, which is a variety of ‘Maastricht stone’. Both methods indicate that the ‘Elst tauw’ developed in beds that can be assigned to the condensed Valkenburg-Schiepersberg interval of the lower Maastricht Formation. Petrographical analysis has shown the ‘Elst tauw’ to be quite distinctive; in addition, its natural occurrence at the Elst quarry matches the building stone records in rock type. The latter stem from the same small area, situated southwest of Maastricht. The major steps in its diagenetic history could be reconstructed, starting with pervasive pyritisation of the calcareous allochems, followed by silicification of the grains and pore spaces (different silica cements that became partially recrystallised), completed by oxidation of pyrite with transformation into limonite and, finally, dissolution of the non-pyritised or partially pyritised skeletal allochems creating a mouldic porosity. Silicification probably was achieved prior to the Oligocene. This particular mode of formation has generated a discussion on the proper use of the vernacular term ‘tauw’, a term used in a different sense by the industry, stratigraphers and students of building stones.

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12

Nelson, Thomas, Jethro Hu, Serguei Bannykh, Xuemo Fan, Jeremy Rudnick, and Eric Vail. "Clinical response to pazopanib in a patient with endolymphatic sac tumor not associated with von Hippel-Lindau syndrome." CNS Oncology 9, no. 1 (March 1, 2020): CNS50. http://dx.doi.org/10.2217/cns-2019-0019.

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Endolymphatic sac tumors (ELSTs) are rare, locally invasive, vascular tumors of the temporal bone. These lesions are associated with von Hippel-Lindau syndrome but may arise sporadically. Early surgical intervention is recommended to prevent permanent neurologic deficits; however, many ELSTs are unresectable or are subtotally resected due to neurovascular compromise. Chemotherapeutic salvage therapy in trials of neoplasms of associated syndromes has targeted angiogenesis with variable response. We present the case of a sporadic ELST, previously minimally responsive to bevacizumab, treated with pazopanib, a multi-kinase inhibitor and antiangiogenic, with good response. Cases such as our patient may demonstrate the utility of novel antiangiogenics in the treatment of these rare neoplasms, particularly when the tumor is unresectable or necessitates subtotal resection.

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13

Legrand-Cattan, K., A. Maillard, and D. Debarge. "L’organisation en « Équipe Locale Santé Travail » (ELST) : retours d’expérience." Archives des Maladies Professionnelles et de l'Environnement 73, no. 3 (June 2012): 386. http://dx.doi.org/10.1016/j.admp.2012.03.157.

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14

Lodi, Mariachiara, Antonio Marrazzo, Antonella Cacchione, Marina Macchiaiolo, Antonino Romanzo, Luciano Mastronardi, Francesca Diomedi-Camassei, et al. "Synchronous Presentation of Rare Brain Tumors in Von Hippel–Lindau Syndrome." Diagnostics 11, no. 6 (May 31, 2021): 1005. http://dx.doi.org/10.3390/diagnostics11061005.

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Von Hippel–Lindau (VHL) disease is a heritable cancer syndrome in which benign and malignant tumors and/or cysts develop throughout the central nervous system (CNS) and visceral organs. The disease results from mutations in the VHL tumor suppressor gene located on chromosome 3 (3p25-26). A majority of individuals (60–80%) with VHL disease will develop CNS hemangioblastomas (HMG). Endolymphatic sac tumor (ELST) is an uncommon, locally aggressive tumor located in the medial and posterior petrosal bone region. Its diagnosis is based on clinical, radiological, and pathological correlation, and it can occur in the setting of VHL in up to 10–15% of individuals. We describe a 17-year-old male who presented with a chief complaint of hearing loss. Brain and spine Magnetic Resonance Imaging documented the presence of an expansive lesion in the left cerebellar hemisphere, compatible with HMG in association with a second cerebellopontine lesion compatible with ELST. The peculiarity of the reported case is due to the simultaneous presence of two typical characteristics of VHL, which led to performing comprehensive genetic testing, thus allowing for the diagnosis of VHL. Furthermore, ELST is rare before the fourth decade of life. Early detection of these tumors plays a key role in the optimal management of this condition.

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15

Gao, Wutong, Jianguo Yan, Bo Wang, Guo Xi, Mao Ye, Weitong Jin, and Jean-Pierre Barriot. "A lander radio science experiment for the estimation of the gravity field and rotation of comet 133P/Elst-Pizarro." Monthly Notices of the Royal Astronomical Society 505, no. 1 (May 11, 2021): 103–15. http://dx.doi.org/10.1093/mnras/stab1297.

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ABSTRACT The main belt comet 133P/Elst-Pizarro is one of the targets of the proposed Chinese small body exploration mission. The rotation and gravity of this comet will be modelled at the end of the mission phase. To prepare this mission, we performed a radio science simulation based on the current knowledge of the characteristics of 133P/Elst-Pizarro. Simulated two-way Earth–orbiter and orbiter–lander range rate tracking data with a lander positioned at the comet equator were used to determine the gravity field coefficients and the rotational parameters. Our simulation results show that the introduction of the orbiter–lander range rate data can significantly decrease the uncertainty in the initial state vector of the orbiter as well as the uncertainty in the rotation and gravity parameters.

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16

Jewitt, David, Masateru Ishiguro, Harold Weaver, Jessica Agarwal, Max Mutchler, and Steven Larson. "HUBBLE SPACE TELESCOPEINVESTIGATION OF MAIN-BELT COMET 133P/ELST-PIZARRO." Astronomical Journal 147, no. 5 (April 11, 2014): 117. http://dx.doi.org/10.1088/0004-6256/147/5/117.

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17

Snodgrass, C., G. H. Jones, H. Boehnhardt, A. Gibbings, M. Homeister, N. Andre, P. Beck, et al. "The Castalia mission to Main Belt Comet 133P/Elst-Pizarro." Advances in Space Research 62, no. 8 (October 2018): 1947–76. http://dx.doi.org/10.1016/j.asr.2017.09.011.

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18

Lonser, Russell R., Martin Baggenstos, H. Jeffrey Kim, John A. Butman, and Alexander O. Vortmeyer. "The vestibular aqueduct: site of origin of endolymphatic sac tumors." Journal of Neurosurgery 108, no. 4 (April 2008): 751–56. http://dx.doi.org/10.3171/jns/2008/108/4/0751.

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Object Although endolymphatic sac tumors (ELSTs) frequently destroy the posterior petrous bone and cause hearing loss, the anatomical origin of these neoplasms is unknown. To determine the precise topographic origin of ELSTs, the authors analyzed the imaging, operative, and pathological findings in patients with von Hippel–Lindau disease (VHL) and ELSTs. Methods Consecutive VHL patients with small (≤ 1.5 cm) ELSTs who underwent resection at the National Institutes of Health were included. Clinical, imaging, operative, and pathological findings were analyzed. Results Ten consecutive VHL patients (6 male and 4 female) with 10 small ELSTs (≤ 1.5 cm; 9 left, 1 right) were included. Serial imaging captured the development of 6 ELSTs and revealed that they originated within the intraosseous (vestibular aqueduct) portion of the endolymphatic duct/sac system. Imaging just before surgery demonstrated that the epicenters of 9 ELSTs (1 ELST was not visible on preoperative imaging) were in the vestibular aqueduct. Inspection during surgery established that all 10 ELSTs were limited to the intraosseous endolymphatic duct/sac and the immediately surrounding region. Histological analysis confirmed tumor within the intraosseous portion (vestibular aqueduct) of the endolymphatic duct/sac in all 10 patients. Conclusions ELSTs originate from endolymphatic epithelium within the vestibular aqueduct. High-resolution imaging through the region of the vestibular aqueduct is essential for diagnosis. Surgical exploration of the endolymphatic duct and sac is required for complete resection.

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19

Wever, B. de. "F. van der Elst, De bewogen jaren: mijn memoires 1920-1958." BMGN - Low Countries Historical Review 103, no. 1 (January 1, 1988): 86. http://dx.doi.org/10.18352/bmgn-lchr.2916.

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20

Hsieh, Henry H., David Jewitt, Pedro Lacerda, Stephen C. Lowry, and Colin Snodgrass. "The return of activity in main-belt comet 133P/Elst-Pizarro." Monthly Notices of the Royal Astronomical Society 403, no. 1 (March 21, 2010): 363–77. http://dx.doi.org/10.1111/j.1365-2966.2009.16120.x.

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21

Hsieh, Henry H., David Jewitt, and Yanga R. Fernández. "ALBEDOS OF MAIN-BELT COMETS 133P/ELST-PIZARRO AND 176P/LINEAR." Astrophysical Journal 694, no. 2 (March 10, 2009): L111—L114. http://dx.doi.org/10.1088/0004-637x/694/2/l111.

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22

Hsieh, Henry H., David C. Jewitt, and Yanga R. Fernández. "The Strange Case of 133P/Elst-Pizarro: A Comet among the Asteroids." Astronomical Journal 127, no. 5 (May 2004): 2997–3017. http://dx.doi.org/10.1086/383208.

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23

ANDRIJASEVIC, JANKO. "ELST: Twenty Years with a vHL-Related Tumor in My Inner Ear." Cambridge Quarterly of Healthcare Ethics 28, no. 04 (September 17, 2019): 744–51. http://dx.doi.org/10.1017/s0963180119000689.

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24

Brotto, Davide, and Federica Sartorato. "Enlargement of the vestibular aqueduct at cone-beam CT: ELST or EVA?" Hearing, Balance and Communication 18, no. 1 (January 2, 2020): 46–48. http://dx.doi.org/10.1080/21695717.2020.1716572.

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25

Gao, Wu-Tong, Jian-Guo Yan, Wei-Tong Jin, Xuan Yang, Chen Yang, Mao Ye, Fei Li, and Jean-Pierre Barriot. "A simulation experiment on the GM estimation for Comet 133P/Elst-Pizarro." Research in Astronomy and Astrophysics 21, no. 1 (January 1, 2021): 016. http://dx.doi.org/10.1088/1674-4527/21/1/16.

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Ferrín, Ignacio. "Secular light curves of comets, II: 133P/Elst–Pizarro, an asteroidal belt comet." Icarus 185, no. 2 (December 2006): 523–43. http://dx.doi.org/10.1016/j.icarus.2006.07.005.

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Bagnulo, S., G. P. Tozzi, H. Boehnhardt, J. B. Vincent, and K. Muinonen. "Polarimetry and photometry of the peculiar main-belt object 7968 = 133P/Elst-Pizarro." Astronomy and Astrophysics 514 (May 2010): A99. http://dx.doi.org/10.1051/0004-6361/200913339.

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28

Kim, H. Jeffrey, John A. Butman, Carmen Brewer, Christopher Zalewski, Alexander O. Vortmeyer, Gladys Glenn, Edward H. Oldfield, and Russell R. Lonser. "Tumors of the endolymphatic sac in patients with von Hippel—Lindau disease: implications for their natural history, diagnosis, and treatment." Journal of Neurosurgery 102, no. 3 (March 2005): 503–12. http://dx.doi.org/10.3171/jns.2005.102.3.0503.

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Object. Endolymphatic sac tumors (ELSTs), which often are associated with von Hippel—Lindau (VHL) disease, cause irreversible hearing loss and vestibulopathy. Clinical and imaging surveillance protocols provide new insights into the natural history, mechanisms of symptom formation, and indications for the treatment of ELSTs. To clarify the uncertainties associated with the pathophysiology and treatment of ELSTs, the authors describe a series of patients with VHL disease in whom serial examinations recorded the development of ELSTs. Methods. Patients with VHL disease were included if serial clinical and imaging studies captured the development of ELSTs, and the patients underwent tumor resection. The patients' clinical, audiological, and imaging characteristics as well as their operative results were analyzed. Five consecutive patients (three men and two women) with a mean age at surgery of 34.8 years and a follow-up period of 6 to 18 months were included in this study. Audiovestibular symptoms were present in three patients before a tumor was evident on neuroimaging. Imaging evidence of an intralabyrinthine hemorrhage coincided with a loss of hearing in three patients. Successful resection of the ELSTs was accomplished by performing a retrolabyrinthine posterior petrosectomy (RLPP). Hearing stabilized and vestibular symptoms resolved after surgery in all patients. No patient has experienced a recurrence. Conclusions. Audiovestibular symptoms, including hearing loss, in patients with VHL disease can be the result of microscopic ELSTs. Once an ELST has been detected, it can be completely resected via an RLPP with preservation of hearing and amelioration of vestibular symptoms. Early detection and surgical treatment of small ELSTs, when hearing is still present, should reduce the incidence and severity of hearing loss, tinnitus, vertigo, and cranial nerve dysfunction, which are associated with these tumors.

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Kim, H. Jeffrey, John A. Butman, Brewer Carmen, Christopher Zalewski, Alexander O. Vortmeyer, Gladys Glenn, Edward H. Oldfield, and Russell R. Lonser. "Tumors of the endolymphatic sac in patients with von Hippel–Lindau disease: implications for their natural history, diagnosis, and treatment." Neurosurgical Focus 19, no. 2 (August 2005): 503–12. http://dx.doi.org/10.3171/foc.2005.19.2.11.

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Object Endolymphatic sac tumors (ELSTs), which often are associated with von Hippel–Lindau (VHL) disease, cause irreversible hearing loss and vestibulopathy. Clinical and imaging surveillance protocols provide new insights into the natural history, mechanisms of symptom formation, and indications for the treatment of ELSTs. To clarify the uncertainties associated with the pathophysiology and treatment of ELSTs, the authors describe a series of patients with VHL disease in whom serial examinations recorded the development of ELSTs. Methods Patients with VHL disease were included if serial clinical and imaging studies captured the development of ELSTs, and the patients underwent tumor resection. The patients' clinical, audiological, and imaging characteristics as well as their operative results were analyzed. Five consecutive patients (three men and two women) with a mean age at surgery of 34.8 years and a follow-up period of 6 to 18 months were included in this study. Audiovestibular symptoms were present in three patients before a tumor was evident on neuroimaging. Imaging evidence of an intralabyrinthine hemorrhage coincided with a loss of hearing in three patients. Successful resection of the ELSTs was accomplished by performing a retrolabyrinthine posterior petrosectomy (RLPP). Hearing stabilized and vestibular symptoms resolved after surgery in all patients. No patient has experienced a recurrence. Conclusions Audiovestibular symptoms, including hearing loss, in patients with VHL disease can be the result of microscopic ELSTs. Once an ELST has been detected, it can be completely resected via an RLPP with preservation of hearing and amelioration of vestibular symptoms. Early detection and surgical treatment of small ELSTs, when hearing is still present, should reduce the incidence and severity of hearing loss, tinnitus, vertigo, and cranial nerve dysfunction, which are associated with these tumors.

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Boehnhardt, H., Z. Sekanina, A. Fiedler, H. Rauer, R. Schulz, and G. Tozzi. "Impact-Induced Activity of The Asteroid-Comet P/1996N2 Elst-Pizarro: Yes or No?" Highlights of Astronomy 11, no. 1 (1998): 233–36. http://dx.doi.org/10.1017/s1539299600020645.

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AbstractP/1996 N2 Elst-Pizarro was discovered with a tail of dust in July 1996 and was thus classified as periodic comet. From the orbit point of view it belongs to the outer asteroid belt and is very likely a member of the Themis family, a group of bodies originating from an asteroid collision.The absence of a coma and the presence of the needle-like anti-tail in August 1996 did not exclude the possibility of a sudden emission event which could have been caused by the impact of another minor body on the object. However, with the development of a normal tail between September and November 1996 it became obvious that the dust emission episode continued at least for 2 months after perihelion, a scenario that is typical for gas-driven cometary activity. However, it is still possible that a collision triggered the event.The paper summarizes the observational pro and cons for impact-induced activity in this object, possibly the first ever detected comet-asteroid of the solar system.

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Alfing, Barbara-Henrika. "Skandalereignis oder Skandalberichterstattung? Vom Hoffnungsträger zum Sündenbock: Die Berichterstattung über den Fall Tebartz-van Elst." Communicatio Socialis 48, no. 4 (2015): 449–64. http://dx.doi.org/10.5771/0010-3497-2015-4-449.

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Albisu Ardigó, Iñaki, and Dan Hough. "Bishops Who Live Like Princes: Bishop Tebartz-van Elst and the Challenge of Defining Corruption." Public Integrity 20, no. 1 (November 17, 2016): 64–79. http://dx.doi.org/10.1080/10999922.2016.1243001.

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Prialnik, Dina, and Eric D. Rosenberg. "Can ice survive in main-belt comets? Long-term evolution models of comet 133P/Elst-Pizarro." Monthly Notices of the Royal Astronomical Society: Letters 399, no. 1 (October 11, 2009): L79—L83. http://dx.doi.org/10.1111/j.1745-3933.2009.00727.x.

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Boeva, Luc. "Culturele collaboratie en “het terrein der Kunst”. Een document rond de repressie en epuratie van Prosper De Troyer." WT. Tijdschrift over de geschiedenis van de Vlaamse beweging 66, no. 2 (January 1, 2007): 163–73. http://dx.doi.org/10.21825/wt.v66i2.12542.

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Kunstschilder Prosper De Troyer (1880-1961) behoorde tot de Vlaamse potentiële avant-garde, die zich bewoog in de rand van het activisme. Tijdens de twintiger jaren evolueerde hij in figuratieve, expressionistische zin, waarbij hij steeds sterker tendeerde naar een beeldentaal die kon gelden als de Identitätsnachweis van het Vlaamse volk. Dat beeld was overigens in overeenstemming met de smaak (en de doelstellingen) van de Nieuwe Orde; De Troyer ging uiteindelijk de weg van de culturele collaboratie en kwam na de Tweede Wereldoorlog in aanraking met de repressie en de epuratie. In deze bronnenpublicatie stelt Luc Boeva een pleitnota voor van zijn advocaat, Frans van der Elst, die daarin de relatie tussen kunst en politiek centraal stelt. De tekst vormt daardoor een bron voor het vergelijkend kwalitatiief onderzoek van de culturele collaboratie c.q. de repressie.________Cultural collaboration and the "Art sector". A document dealing with the repression and purgation of Prosper De TroyerThe painter Prosper De Troyer (1880-1961) belonged to the Flemish potential avant-garde, which operated in the margins of activism. During the nineteen twenties he evolved in a figurative, expressionistic sense, and he tended to increasingly use an evocative language which could refer to the Identitätsnachweis of the Flemish nation. At any rate, that image agreed with the taste (and the objectives) of the New Order; De Troyer ultimately followed the path of cultural collaboration and after the Second World War he experienced repression and purgation. In this source publication Luc Boeva presents the memoranda of oral pleadings of De Troyer's solicitor, Frans Van der Elst, in which he focuses on the relationship between art and politics. For that reason the text constitutes a source for comparative qualitative research of cultural collaboration and/or the repression.

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Toth, I. "Search for comet-like activity in asteroid 7968 Elst-Pizarro and limitation of its rotational pole orientation." Astronomy & Astrophysics 446, no. 1 (January 2006): 333–43. http://dx.doi.org/10.1051/0004-6361:20053550.

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Licandro, J., H. Campins, G. P. Tozzi, J. de León, N. Pinilla-Alonso, H. Boehnhardt, and O. R. Hainaut. "Testing the comet nature of main belt comets. The spectra of 133P/Elst-Pizarro and 176P/LINEAR." Astronomy & Astrophysics 532 (July 22, 2011): A65. http://dx.doi.org/10.1051/0004-6361/201117018.

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Hsieh, Henry H. "Main-belt comets: sublimation-driven activity in the asteroid belt." Proceedings of the International Astronomical Union 10, S318 (August 2015): 99–110. http://dx.doi.org/10.1017/s1743921315008546.

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AbstractOur knowledge of main-belt comets (MBCs), which exhibit comet-like activity likely due to the sublimation of volatile ices, yet orbit in the main asteroid belt, has increased greatly since the discovery of the first known MBC, 133P/Elst-Pizarro, in 1996, and their recognition as a new class of solar system objects after the discovery of two more MBCs in 2005. I review work that has been done over the last 10 years to improve our understanding of these enigmatic objects, including the development of systematic discovery methods and diagnostics for distinguishing MBCs from disrupted asteroids (which exhibit comet-like activity due to physical disruptions such as impacts or rotational destabilization). I also discuss efforts to understand the dynamical and thermal properties of these objects.

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Katsurada, Kikushi, and Gonbei Kamijima. "Outcome of prehospital cardiopulmonary resuscitation by ambulance personnel in Japan. Recent improvement in the outcome by "ELST" system." Nihon Kyukyu Igakukai Zasshi 8, no. 4 (1997): 131–37. http://dx.doi.org/10.3893/jjaam.8.131.

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Du, Jiang, Junmei Wang, Yun Cui, Cuiping Zhang, Guilin Li, Jingyi Fang, Shenglin Yue, and Li Xu. "Clinicopathologic study of endolymphatic sac tumor (ELST) and differential diagnosis of papillary tumors located at the cerebellopontine angle." Neuropathology 35, no. 5 (May 6, 2015): 410–20. http://dx.doi.org/10.1111/neup.12200.

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Lippiatt, G. E. M. "The Knight, the Cross, and the Song: Crusade Propaganda and Chivalric Literature, 1100-1400 by Stefan Vander Elst." Religion & Literature 50, no. 3 (2018): 137–39. http://dx.doi.org/10.1353/rel.2018.0031.

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Fil, Yu. "Culture Wars around Hinduism in Contemporary India. Review on: Elst K. Hindu Dharma and the Culture Wars. New Delhi: Rupa Publications, 2019. 261 p." World of the Orient 2021, no. 3 (September 30, 2021): 198–203. http://dx.doi.org/10.15407/orientw2021.03.198.

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Kirsch, V., S. Becker-Bense, A. Berman, J. Gerb, B. Ertl-Wagner, and M. Dieterich. "P120. MRI of the inner ear enables differentiation of central and peripheral vestibular pathologies in a postoperative ELST patient." Clinical Neurophysiology 129, no. 8 (August 2018): e111-e112. http://dx.doi.org/10.1016/j.clinph.2018.04.734.

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Patria, Adi. "NUMERICAL MODELLING APPLICATIONS ON FRACTURE PREDICTIONS: AN EXAMPLE FROM THE BLUE LIAS FORMATION IN KILVE, UK." RISET Geologi dan Pertambangan 28, no. 2 (November 27, 2018): 193. http://dx.doi.org/10.14203/risetgeotam2018.v28.801.

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Numerical modeling using Comsol Multiphysics, with Finite Element Method, has been carried out to study fracture initiation, linkage, and deflection of the Blue Lias Formation. Data were from outcrop observation where hydrofractures were well observed. Three models were set up to understand how fractures initiated, linked and arrested. The Young’s modulus of shales (Esh) was set with the value of 1 GPa, 5 GPa, and 10 GPa. The fluid excess pressure was applied with the value of 5 MPa, 10 MPa, and 15 MPa. The Young’s modulus of the limestone (Elst) was a constant at 10 GPa. The first model showed how the overburden induces fracture initiation. The results indicated that tensile stress concentrated only within limestone and favour to form fractures. The second model was about linking of fractures. The result explained that shear stress was dominantly concentrated in limestone layers. Previous hydrofractures possibly linked up forming shear fractures and en-echelon fractures. The third model was run to understand fracture propagation and deflection. The result was that tensile stress concentrated at the hydrofracture tips close to the contacts between limestone and shale. Hydrofractures were deflected, and in some places, hydrofractures were likely started to propagate through shale.Permodelan numerik dengan Comsol Multiphysics berdasarkan metode Elemen Terbatas dilakukan untuk mempelajari inisiasi, hubungan, dan defleksi rekahan Formasi Blue Lias. Data berasal dari observasi singkapan dimana hydrofracture teramati. Tiga model dibuat untuk memahami bagaimana rekahan terinisiasi, terhubung, terambatkan dan terhenti. Modulus Young’s batulempung (Esh) diatur dengan nilai 1 GPa, 5GPa, dan 10 GPa. Tekanan kelebihan cairan (fluid excess pressure) yang diterapkan sebesar 5 MPa, 10 MPa, dan 15 MPa. Modulus Young’s batugamping (Elst) konstan sebesar 10 GPa. Model pertama menunjukkan bagaimana pembebanan mempengaruhi inisiasi rekahan. Hasil perhitungan menunjukkan bahwa tekanan tarik terkonsentrasi hanya pada lapisan batugamping dan memungkinkan terbentuknya rekahan. Model kedua mengenai hubungan rekahan. Model menunjukkan bahwa tekanan geser terkonsentrasi pada lapisan batugamping secara dominan. Hydrofracture yang telah ada akan terhubung membentuk rekahan geser and rekahan en-echelon. Model ketiga dihitung untuk memahami perambatan dan defleksi rekahan. Hasilnya menunjukkan bahwa tekanan tarik terkonsentrasi pada ujung hydrofracture dekat kontak lapisan batugamping dan batulempung. Hydrofracture terdefleksi dan pada beberapa titik mulai merambat menembus batulempung.

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Jin, W. T., F. Li, J. G. Yan, T. P. Andert, M. Ye, X. Yang, W. F. Hao, and J. P. Barriot. "A simulated global GM estimate of the asteroid 469219 Kamo‘oalewa for China’s future asteroid mission." Monthly Notices of the Royal Astronomical Society 493, no. 3 (February 27, 2020): 4012–21. http://dx.doi.org/10.1093/mnras/staa384.

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ABSTRACT China will launch in the forthcoming years a sample return mission called ZhengHe, to asteroid 469219 Kamo‘oalewa (provisional designation 2016HO3) and comet 133P/Elst-Pizarro. The mission will consist of an orbiter and a nano-lander. One of ZhengHe’s investigations is the radio science experiment, whose main objective is the asteroid GM estimate. In this paper, we conduct full numerical simulations of the radio science experiment using the wudogs software package, developed by Wuhan University. In addition to two-way Doppler measurements, we also include one-way on-board distance measurements. A list of parameters including the spacecraft initial conditions and the global asteroid GM are solved using a weighted least-squares fit. The simulation results indicate that the GM solution is very sensitive to the ephemeris error. We need an accuracy within 2 km on the ephemeris of the asteroid to achieve a reliable estimate of GM.

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Leigh, L. H. "Mélanges offerts à Robert Legros. Edited by Raymond Vander Elst.[Brussesls: Editions de l' Université de Bruxelles. 1985. 783 pp.]." International and Comparative Law Quarterly 35, no. 2 (April 1986): 492–93. http://dx.doi.org/10.1093/iclqaj/35.2.492.

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Decavele, Johan. "Vroege Reformatorische Bedrijvigheid in De Grote Nederlandse Steden: Claes Van Der Elst Te Brussel, Antwerpen, Amsterdam En Leiden (1524-1528)." Nederlands Archief voor Kerkgeschiedenis / Dutch Review of Church History 70, no. 1 (1990): 13–29. http://dx.doi.org/10.1163/002820390x00033.

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Prialnik, Dina. "Long-term evolution of small icy bodies of the Solar System." Proceedings of the International Astronomical Union 5, S263 (August 2009): 121–25. http://dx.doi.org/10.1017/s1743921310001614.

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AbstractDetailed evolutionary calculations spanning 4.6 × 109 yr are presented for (a) a model representing main-belt comet 133P/Elst-Pizarro, considering different initial mixtures of ices and dust, and (b) a Kuiper Belt object heated by radioactive decay, growing in size from an initial radius of 10 km to a final 250 km.It is shown that for the main-belt comet only crystalline H2O ice may survive in the interior of the nucleus, and may be found at depths ranging from ~50 to 150 m. Other volatiles will be completely lost. For the large Kuiper Belt object, evaporation and flow of water and vapor gradually remove the water from the core and the final (present) structure is differentiated, with a rocky, highly porous core of 80 km radius. Outside the core, due to refreezing of water vapor, a compact, ice-rich layer forms, a few tens of km thick. The amorphous ice is preserved in an outer layer about 20 km thick.

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Czopek, Jacek, Marcin Waśko, and Dariusz Adamek. "Endolymphatic sac tumour (ELST). of a rare tumour of the temporal bone, presenting as a mass in a cerebello-pontine angle." Folia Neuropathologica 2 (2013): 164–68. http://dx.doi.org/10.5114/fn.2013.35960.

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Rigaux, Marie-Françoise. "Les notions à contenu variable en droit, études publiées par Ch. Perelman et R. Vander Elst, Bruxelles, Bruylant, 1984, 377 p." Revue interdisciplinaire d'études juridiques 14, no. 1 (1985): 159. http://dx.doi.org/10.3917/riej.014.0159.

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Yu, Liang Liang, Chih Hao Hsia, and Wing-Huen Ip. "Low-activity Main-belt Comet 133P/Elst-Pizarro: New Constraints on Its Albedo, Temperature, and Active Mechanism from a Thermophysical Perspective." Astronomical Journal 159, no. 2 (January 23, 2020): 66. http://dx.doi.org/10.3847/1538-3881/ab61f7.

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