Abstract Library

#4175 Immunohistochemical profiling of lung carcinoid subtypes and marker comparison of matched primary and metastatic tumors

Introduction: Multi-omic studies have identified three lung carcinoid (LC) subtypes (A1, A2, B) with unique gene expression for OTP, ASCL1 & HNF1a.

Conference:

Presenting Author: Leunissen D

Authors: Leunissen D, Moonen L, von der Thüsen J, den Bakker M, Hillen L,

Keywords: lung carcinoid, TTF1, S100, metastatic disease,

#3733 New insights on the clinical role of Ki-67 and spindle cell and oncocytic histological variants in lung carcinoid tumors

Introduction: WHO classification defines lung carcinoid tumors (LCTs) as well-differentiated neuroendocrine neoplasms classified in typical (TC) and atypical carcinoids (AC). Morphologic factors and protein expression able to predict recurrence after surgical curative resection are little known. Ki-67 and spindle cell and oncocytic histological variants may impact on differential diagnosis, but their clinical relevance is much debated.

Conference:

Presenting Author: Milione M

Authors: Centonze G, Maisonneuve P, Grillo F, Prinzi N, Lagano V,

Keywords: lung carcinoid, Ki-67, spindle cell, oncocytic, Immunohistochemistry,

#3652 Features of the expression of TTF-1 and Cytokeratin 19 as a predictor of a less favourable prognosis of atypical lung carcinoids

Introduction: Atypical lung carcinoids are a highly heterogeneous group of tumors, some of which have more malignant potential, which makes the search for additional morphological prognostic criteria relevant.

Conference:

Presenting Author:

Authors: Gurevich L, Bondarenco E, Markarova E, Kagoniya L,

Keywords: lung carcinoid, atypical, prognosis, TTF1, cytokeratin 19,

#3427 Updated morphological and immunohistochemical profile of neuroendocrine tumors developed in ovarian teratomas: A large series of a rare disease

Introduction: Ovarian carcinoid tumors are rare, often arising within a mature teratoma. No recent reevaluation of the immunophenotype of these tumors with new markers available has been performed.

Conference:

Presenting Author: Couvelard A

Authors: Leclerc J, Genestie C, Hentic O, Scoazec J, Couvelard A,

Keywords: NET, carcinoid, Ki67, ovarian teratoma, gynecology, pathology,

#3035 Large-Cell Neuroendocrine Carcinoma of the Lung in Elderly Patient: Case Report and Review of Literature

Introduction: Lung neuroendocrine tumors account for less than 25% of lung cancers.Which is a rare malignant tumor with an aggressive profile has often already affected lymph nodes at presentation and it is de novo metastatic in nearly 40% of cases.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author:

Authors: Aliane H, Ghomari S,

Keywords: Large cell neuroendocrine carcinoma, Biopsy, Immunohistochemical staining, Chemosensitivity, Prognosis,