Abstract library

1039 results for "primary lymph node gastrinoma".
#283 Primary Lymph Node Gastrinoma: A Genuine Entity? Two Case Reports and a Review of the Literature
Introduction: The existence of primary lymph node gastrinoma has been proposed but is controversial. We report two cases (Case A - 37-year-old male, Case B - 43-year-old male) of apparent primary lymph node gastrinoma.
Conference: 8th Annual ENETS Conference (2011)
Category: Clinical
Presenting Author: Dr Richard W Carroll
#690 Primary Lymph Node Gastrinoma or Metastatic Gastrinoma with Unidentified Primary Tumor Site?
Introduction: The existence of primary lymph node gastrinoma remains controversial.
Conference: 10th Annual ENETS Conference (2013)
Category: Epidemiology/Natural history/Prognosis - Descriptive epidemiology
Presenting Author: Helen Miller
#2832 Lymph Node Merkel Cell Carcinoma without Primary: Long Term Survival
Introduction: Merkel cell carcinoma (MCC) is a rare aggressive cutaneous neuroendocrine carcinoma with a high rate of metastasis. Approximately 5% of MCC are found in the lymph nodes (LNs) without a primary tumor on the skin.
Conference: 17th Annual ENETS Conference (2020)
Category: Case reports
Presenting Author: Dr Mohammed Alaeddine Saidi
Authors: Saidi M A, Ghomari S, ...
#1402 Merkel Cell Carcinoma of Lymph Node Without Skin Primary Can - and Should - Be Distinguished from Others Metastatic Neuroendocrine Carcinoma
Introduction: Merkel cell carcinoma of lymph node without primary tumour (MCCNWP) is a rare tumour which can be misinterpreted as lymph node metastasis (LNM) from a high-grade neuroendocrine carcinoma (NEC) on histological examination. However, this distinction is crucial for therapeutic management.
Conference: 13th Annual ENETS conference (2016)
Category: Non digestive NETs (bronchial, MTC, pheochromocytoma)
Presenting Author: Prof. Serge Guyetant
#2689 Correlation between Immunohistochemical Markers Expression and Lymph Node Metastasis in Gastroenteropancreatic Neuroendocrine Neoplasms: A Nation-Wide 10-Year Retrospective Clinical Epidemiological Study in China
Introduction: Previous research on the correlation between different pathological features and the development of gastroenteropancreatic neuroendocrine neoplasms (GEP-NENs) is rare in China.
Conference: 17th Annual ENETS Conference (2020)
Category: Epidemiology/Natural history/Prognosis - Registries, nationwide and regional surveys
Presenting Author: Huan Yang
Authors: Yang H, Shi S, Zhang S, Ji Y, ...
#2007 The Exact Prognostic Significance of Lymphatic Metastasis of Jejunoileal Neuroendocrine Tumors
Introduction: How to evaluate the prognostic significance of lymphatic metastasis in patients with jejunoileal neuroendocrine tumors (jNETs) is still not conclusive.
Conference: 15th Annual ENETS conference (2018)
Category: Epidemiology/Natural history/Prognosis- Registries, nationwide and regional surveys
Presenting Author: Professor Jie Chen
Authors: Zhang Y, Chen L, Song Y, Chen M, ...
#1785 Eterogeneity of Duodenal Neuroendocrine Tumors: A Multi-Centre Experience in Italy
Introduction: Duodenal neuroendocrine neoplasms (dNENs) are heterogeneous tumors, which could have a highly variable prognosis.
Conference: 14th Annual ENETS conference (2017)
Category: Epidemiology/Natural history/Prognosis - Prognosis
Presenting Author: dr Sara Massironi
#135 The importance of endoscopic ultrasound in detecting recurrent gastrinoma in a case of MEN 1
Introduction: Approximately 25-30% of patients have gastrinomas as part of the inherited syndrome Multiple Endocrine Neoplasia 1 (MEN 1). Gastrinomas occur in the pancreas, duodenum or peripancreatic lymph nodes. Diagnosis is made by clinical history, gastroscopy, and measurement of serum gastrin, gastric juice pH, CT scan, endoscopic ultrasound (EUS) and somatostatin receptor scintigraphy (SRS). Localization of gastrinomas in patients with MEN 1 is challenging due to their small size, frequent duodenal location, and multiplicity.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Prof. Laura De Marinis
#353 Pattern and Clinical Predictors of Lymph Node Involvement in Neuroendocrine Neoplasms of the Pancreas
Introduction: Pancreatic neuroendocrine neoplasms (PNENs) are often indolent without pathological lymph node metastasis (pN1). Therefore, in patients with low risk of pN1, a lymphadenectomy could be avoided.
Conference:
Category: Basic
Presenting Author: Stefano Partelli
#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
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