Multicenter Retrospective Analysis of Systemic Chemotherapy for Advanced Poorly Differentiated Neuroendocrine Carcinoma of Digestive System Abstract #620

Introduction: No standard chemotherapy is established for advanced poorly differentiated neuroendocrine carcinoma (PDNEC) originating from the gastrointestinal tract (GI) or the hepato-biliary-pancreatic system (HBP).
Aim(s): This retrospective study investigated outcomes of GI/HBP-PDNEC patients treated with systemic chemotherapy.
Materials and methods: Selection criteria were: 1) histologically proven PDNEC, small cell carcinoma, mixed endocrine-exocrine carcinoma with a PDNEC component, or histologically proven neuroendocrine tumor with rapid progression; 2) primary tumor arising from GI or HBP; 3) unresectable or recurrent disease treated with systemic chemotherapy between April 2000 and March 2011.
Conference: 10th Annual ENETS Conference 2013 (2013)
Category: Clinical cases/reports
Presenting Author: MD Tomohiro Yamaguchi

To read results and conclusion, please login ...

Further abstracts you may be interested in

#2864 Irinotecan-Based Regimens for the Second-Line Treatment of Extrapulmonary Poorly Differentiated Neuroendocrine Carcinomas: A Monocentric Experience
Introduction: Neuroendocrine carcinomas (NECs) are a rare subgroup of neuroendocrine neoplasms that occasionally originate from gastro-entero-pancreatic (GEP) tract. Owing to their low incidence, evidences of the effectiveness of chemotherapy are scarce. Analogously to small cell lung cancer, platinum plus etoposide (Vp16) regimens are currently the standard treatment in first-line, while little data are available on the role of second-line treatment.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Medical treatment - Chemotherapy Somatostatin analogues, Interferon
Presenting Author: Camilla Bardasi
Authors: Bardasi C, Caputo F, Santini C, Cerma K, ...
#106 Gastroenteropancreatic neuroendocrine tumors: single institution clinicopathological study
Introduction: Neuroendocrine cells are widely distributed throughout the body, and neoplasms from these dispersed cells can arise at many sites. They are distinguished into two broad categories: 1) Tumors identified as small cell lung carcinomas with biology and natural history of a high-grade malignancy and characteristics of small cell undifferentiated or anaplastic appearance by light microscopy. The WHO categorizes these tumors as poorly-differentiated neuroendocrine carcinomas; 2) Well-defined neuroendocrine tumors (NETs) with variable, but most lyindolent biologic behavior and characteristic well-differentiated histologic features. The majority arise in the gastrointestinal tract and collectively they are referred as gastroenteropancreatic neuroendocrine tumors (GEP/NETs). They include carcinoid tumors, pancreatic islet cell tumors (gastrinoma, insulinoma, glucagonoma, VIPoma, somatostatinoma), paragangliomas, pheochromocytomas, and medullary thyroid carcinomas. The WHO classifies the GEP/NETs as well-differentiated NETs (carcinoid tumors) if they are noninvasive and have benign behavior or uncertain malignant potential. In contrast, GEP/NETs with characteristics of low-grade malignancy with invasion of the muscularis propria or beyond, or metastases, are characterized as well-differentiated neuroendocrine carcinomas (malignant carcinoids). Pancreatic islet cell tumors, whether functioning or not, are classified as well-differentiated NETs or well-differentiated neuroendocrine carcinomas, due to the (depending on) histologic characteristics. The WHO classification for gastroenteropancreatic NETs based on stage (ie size and presence of metastases) and grade (mitotic rate, perineural and lymphovascular invasion, Ki-67 proliferative index) categorizes them as well-differentiated NETs, e.g., carcinoid tumors, or as well-differentiated neuroendocrine carcinomas.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Dr Michael M. Vaslamatzis
#2730 FOLFIRINEC, A Multi-Center, Randomized, Comparative Phase II Study of FOLFIRINOX vs Platinum-Etoposide as First Line Treatment for Metastatic Neuroendocrine Carcinoma of Gastroenteropancreatic or Unknown Origin, Associated with Molecular Profiling
Introduction: Grade 3 (G3) gastroenteropancreatic (GEP) neuroendocrine carcinoma (NEC) are rare diseases with a poor prognosis. FOLFIRINEC is a multicenter comparative phase II study of mFOLFIRINOX vs platinum-etoposide (PE) as first line treatment for metastatic G3 NEC of GEP or unknown origin.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Trials in Progress/Trials in Concept
Presenting Author: Dr Julien Hadoux
#2740 Long-Term Complete Response in Metastatic Poorly-Differentiated Neuroendocrine Rectal Carcinoma with Multimodal Approach. A Case Report
Introduction: Rectal neuroendocrine carcinomas (NEC) are extremely rare and account for less than 1% of colorectal malignancies.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Case reports
Presenting Author: Medical Doctor Pietro Maria Lombardi