Abstract Library

#3006 Teratoma with Malignant Transformation: A Case Report of a Neuroendocrine Tumor That Arises from the Bronchial Mucosa in a Mature Cystic Teratoma

Introduction: Mature cystic teratoma (MCT) is the most common type of germ cell tumor in the ovary. A malignant tumor that arises in a pre-existing mature teratoma is called teratoma with malignant transformation (TMT).

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Espinola Benza M

Authors: Espinola Benza M, La Salvia A, Hernandez Sanchez L, Gallardo Gallego R, Suarez Pita D,

Keywords: Mature cystic teratoma, teratoma with malignant transformation, surgical resection,

#2941 Mixed Urothelial and Neuroendocrine Carcinoma of the Urinary Bladder: Case Report and Literature Review

Introduction: Neuroendocrine tumors (NETs) comprise <1% of all bladder tumors,characterized by poor prognosis. These tumors may be either pure or impure, intermixed with urothelial carcinoma. There is currently no therapeutic consensus. We report the case of primary impure neuroendocrine carcinoma (NEC).

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author:

Authors: Saidi M, Ghomari S,

Keywords: urinary bladder, mixed tumor, urothelial carcinoma, neuroendocrine carcinoma, chemotherapy, radiotherapy,

#2870 When It Comes to the Diagnostic of Neuroendocrine Neoplasms (NEN), Not All Markers and Clones Were Made Equal. Assessment of 5 Makers in 466 NEN from 10 Anatomical Sites

Introduction: Histological diagnostic of neuroendocrine neoplasms (NEN) relies on morphological criteria and expression of several neuroendocrine marker assessed by immunohistochemistry. Systematic large evaluation of classical (chromogranin A (chrA), synaptophysin (Syn), CD56) and emerging (chromogranin B (chrB), INSM1) markers are lacking.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Cros J

Authors: Mamodaly M, Chen R, Cazes A, Guedj N, Deschamps L,

Keywords: Neuroendocrine markers, Chromogranin A, Chromogranin B, INSM1,

#2764 Cystic Pancreatic Neuroendocrine Tumors. Can We Diagnose Them Preoperatively?

Introduction: Pancreatic neueroendocrine tumors rarely undergo cystic changes but they are often misdiagnosed as pancreatic mucinous cystadenoma, mucinous cystadenocarcinoma, serous cystadenoma, and solid and cystic papillary tumors, or pseudocyst.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Fatima A

Authors: Fatima A, Zaidi S,

Keywords: cystic neuroendocrine tumors, preoperative diagnosis,

#2693 The Distinctive Character of Micro-Vasculature and Immune Cell Infiltration in Cystic Pancreatic Neuroendocrine Tumors

Introduction: Hypervascularity is main character of pancreatic neuroendocrine tumors (PanNETs), cystic PanNET (CPanNET) are unique type of PanNETs for which the microenvironment remains unknown.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author:

Authors: Gao H,

Keywords: pancreatic neuroendocrine tumors, cystic, microvascular density, microvascular integrity, tumor-associated macrophage,