Abstract Library

#3038 Managing Neuroendocrine Neoplasms (NEN) in Association with HIV Infection: A Single Institution Experience

Introduction: There is a paucity of knowledge regarding NEN and HIV infection in the literature.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author:

Authors: Hayes A, Smith K, Liu M, Jenkinson S, Grossman A,

Keywords: Neuroendocrine, Carcinoid, Merkel cell carcinoma, Human immunodeficiency virus, HIV, Prognosis,

#2749 Impact of Next-Generation Sequencing Analyses on Treatment Management of Patients with Advanced Neuroendocrine Neoplasms

Introduction: Molecular genomic analyses are widely used in oncology but experience in advanced neuroendocrine neoplasms (NENs) is still limited.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Garcia Alvarez A

Authors: Garcia-Alvarez A, Hernando J, Vivancos A, Landolfi S, Casteras A,

Keywords: NGS, BRAF, RET,

#2743 Mimics of Neuroendocrine Neoplasms Identified in a Single Consultation Center between 2009 and 2019

Introduction: Immunohistochemical expression of synaptophysin (SYN), chromogranin (CgA) and cytokeratin are essential for diagnosis of NENs. Non-NENs, however, may occasionally also express NE-markers and cytokeratin and cause diagnostic difficulties.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Kasajim A

Authors: Kasajima A, Konukiewitz B, Schlitter A, Weichert W, Klöppel G,

Keywords: pitfalls, pathology diagnosis,

#2297 Merkel Cell Carcinomas in New Zealand: Virus or Ultra Violet?

Introduction: Merkel Cell Carcinoma (MCC) is a rare Neuroendocrine skin tumour. MCC behavior is more aggressive than the more common Melanoma, with treatments often restricted to surgery or radiotherapy, although immunotherapy holds promise overseas. In 2008, a USA study identified an oncogenic polyomavirus (MCPyV) present in eight of ten tested MCC tumours. Studies from across Europe and the USA confirmed MCPyV presence in ~80% of all MCCs. However, a cohort from Australia found a rate of just 24%, suggesting an alternative mechanism; ultra violet (UV) exposure was suspected and later confirmed using genomic mutational signature analysis. Are these are two separate diseases, requiring different clinical management strategies for best patient outcomes?

Conference: 15th Annual ENETSConcerence (2018)

Presenting Author: Robb T

Authors: Robb T, Woodhouse B, Parker K, Miller R, Hayward G,

Keywords: merkel, ddPCR, diagnostics, genomics,

#2172 Well-Differentiated Neuroendocrine Lesions in Inflammatory Bowel Disease

Introduction: Whether inflammatory Bowel disease (IBD) increases the risk of developing neuroendocrine tumors (NETs) is not clear. NETs are rare in IBD, though one recent report suggests that NETs are 15 times more frequent in patients with Crohn’s disease. Besides NETs, which are discrete mass-forming lesions, microscopic neuroendocrine cell clusters or micronests (NEMs), difficult to measure, are sometimes observed in the lamina propria/muscularis mucosae of IBD patients.

Conference: 15th Annual ENETSConcerence (2018)

Presenting Author: Dhall D

Authors: Dhall D, Wong M, Larson B,

Keywords: Inflammatory bowel disease, neuroendocrine tumors, neuroendocrine micronests,