Clinical Characteristics and Treatment Outcome of Six Advanced G3 Well-Differentiated Neuroendocrine Tumors Abstract #1171

Introduction: According to 2010 WHO grading system, all neuroendocrine neoplasms were divided into G1/G2/G3 based on Ki-67 and mitotic count. However, differentiation was also very important for the biological behavior and treatment strategy.
Aim(s): This study focused on G3 well-differentiated neuroendocrine tumor (G3-WDNET), and demonstrated clinical characteristics and different treatment regimens for these patients.
Materials and methods: Differentiation of 43 G3 patients from January 2012 to November 2014 in our hospital were reexamined.
Conference: 12th Annual ENETS Conference (2015)
Category: Medical treatment - Chemotherapy
Presenting Author: Ru Jia

To read results and conclusion, please login ...

Further abstracts you may be interested in

#57 Clinical and demographic characteristics in patients newly diagnosed with neuroendocrine tumors (NET)
Introduction: Neuroendocrine tumors (NETs) are tumors that form from cells that release hormones in response to a signal from the nervous system. These tumors may secrete higher-than-normal amounts of hormones, which can cause many different symptoms.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Chi-Chang Chen
#78 The diagnostic and prognostic value of elevated proGRP levels in well- and moderately differentiated neuroendocrine tumors
Introduction: Chromogranin A (CgA) is the most frequently used marker in well- (grade 1) and moderately (grade 2) differentiated NETs. Although CgA is a more sensitive marker than the 5-HIAA, which was widely used until the last decade, CgA has some limitations. False-positively elevated CgA may occur in renal impairment, atrophic gastritis and during treatment of proton-pump inhibitors. Progastrin-releasing peptide (proGRP) was recently reported as a promising tumor marker for small cell lung cancer. Limited data suggests that ProGRP may be a potential tumor marker in NE tumors.
Conference: 7th Annual ENETS Conference (2010)
Category: Basic
Presenting Author: Msc Catharina M Korse
#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
#161 Low Dose Multiple Cycle (LD/MT) Peptide Receptor Radionuclide Therapy: a new concept for the treatment of well-differentiated metastatic neuroendocrine tumors
Introduction: It has been shown experimentally that low dose radiation can effectively kill slow growing cancer cells. Also, external beam radiation therapy applies a fractionated delivery of radiation dose to reduce toxicity with equal or even better therapeutic efficacy.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Dr. Vikas Prasad
#253 Description and Treatment of GEP NETs in a Spanish Hospital During 10 Years
Introduction: In our area the GEP NET incidence is similar to that of gastric and exocrine pancreatic cancers consequently being important to know their characteristics and the most convenient therapeutic approach.
Conference: 8th Annual ENETS Conference (2011)
Category: Clinical
Presenting Author: MD Paula Jiménez Fonseca