Abstract Library

#3151 Immunohistochemical evaluation of vimentin aberrant expression in lung carcinoid tumors

Introduction: The carcinoid tumors of lung represent a rare group of epithelial well-differentiated neuroendocrine neoplasms with common morphological characteristics and highly variable clinical course. Vimentin is a type III intermediate filament that is involved in cell migration and adhesion. Vimentin also drives epithelial to mesenchymal transition (EMT) and metastasis in solid tumors. However, no information exists for vimentin expression levels and the characterization of EMT phenotypes of lung carcinoid tumors.

Conference: 18th Annual ENETS Concerence (2021)

Presenting Author:

Authors: Delektorskaya V, Chemeris G, Smirnova E,

Keywords: lung carcinoid tumor, vimentin, immunohistochemistry, diagnosis,

#2821 Nucleophosmin Expression and Relocation in Pancreatic Neuroendocrine Tumors: Preliminary Data

Introduction: Pancreatic neuroendocrine tumors (PanNETs) are a heterogeneous group of neoplasms with unpredictable clinical course and biological behavior. Nucleophosmin (NPM) is an important multifunctional protein mainly located in the nucleolus. NPM has been reported to be overexpressed in many types of human cancer, activating tumor development and progression. However, the role of NPM in PanNETs is unknown.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author:

Authors: Delektorskaya V, Bukaeva I, Ponomareva M, Smirnova E,

Keywords: neuroendocrine tumor, pancreas, nucleophosmin, immunohistochemistry, prognosis,

#1844 Selective Approach in Surgical Treatment of Pancreatic Neuroendocrine Tumors

Introduction: Surgical resection is the main method in treating of pancreatic neuroendocrine tumors (pNETs) . Contemporary perioperative diagnostic can help using selective approaches, to perform organ-preserving (OP) procedures including operations with miniinvasive techniques (MI) such as robot – assisted (RA) or laparoscopic (La).

Conference: 14th Annual ENETSConcerence (2017)

Presenting Author: Kaldarov A

Authors: Kaldarov A, Kriger A, Berelavichus S, Gorin D, Smirnov A,

Keywords: pancreatic neuroendocrine tumors, surgical treatment, robot, assisted, miniinvasive, laparoscopic,

#1129 Expression and Clinical Significance of Merkel Cell Polyomavirus Large T Antigen in Merkel Cell Carcinoma

Introduction: Merkel cell carcinoma (MCC) is a rare and aggressive neuroendocrine skin cancer that is often associated with Merkel cell polyomavirus (MCPyV) infection. MCPyV expression and its relationship with clinical features and prognosis in MCC remain unclear.

Conference: 12th Annual ENETSConcerence (2015)

Presenting Author:

Authors: Delektorskaya V, Orlova K, Smirnova E, Demidov L,

Keywords: merkel cell carcinoma, merkel cell polyomavirus, immunohistochemistry, prognosis,

#498 Limitations of Chromogranin A in Clinical Practice

Introduction: Chromogranin-A (CgA) is the most accurate marker for the histological diagnosis of neuroendocrine tumors (NETs). However diagnostic usefulness of circulating CgA is controversial as several conditions, both neoplastic and non-neoplastic, may induce false positive increases of this marker.

Conference: 9th Annual ENETSConcerence (2012)

Presenting Author:

Authors: Marotta V, Nuzzo V, Ferrara T, Zuccoli A, Del Prete M,

Keywords: Chromogranin A, neuroendocrine tumor, false positive marker,