PMID- 26872616 OWN - NLM STAT- MEDLINE DCOM- 20161019 LR - 20220410 IS - 1472-6823 (Electronic) IS - 1472-6823 (Linking) VI - 16 DP - 2016 Feb 12 TI - Results of a prospective multicenter neuroendocrine tumor registry reporting on clinicopathologic characteristics of Greek patients. PG - 8 LID - 10.1186/s12902-016-0089-7 [doi] LID - 8 AB - BACKGROUND: The rare incidence of neuroendocrine neoplasms (NENs) has contributed to a paucity of large epidemiologic studies of patients with this condition. We investigated the occurrence and clinicopathologic features of NENs in Greece. METHODS: Between October 2010 and November 2012 we collected data on 246 newly diagnosed patients from a broad-based multi-institutional registry that comprises eight academic and hospital sites in Greece. The WHO 2010 pathologic classification and the 7th AJCC Staging system was applied in all cases. RESULTS: Of all patients 94 % had a sporadic and 6 % a multiple endocrine neoplasia tumor; 63.4 % were gastroenteropancreatic-(GEP)-NENs, 17.9 % Head & Neck NENs, 9.8 % NENs of Unknown Primary, 6.5 % Lung NENs and 2.4 % Pheochromocytomas. Gastric and pancreatic NENs were the most common primary sites. Poorly differentiated neuroendocrine carcinomas (NEC) were 9.3 %, all sporadic. Fifteen percent of patients were asymptomatic at presentation, 24 % had a first symptom of the disease related to endocrine syndrome and 61 % had symptoms related to locally advanced or metastatic disease. Metastatic disease was established in 25 % of tumors most frequently in the GEP NEN group. Findings are presented according to Ki-67 distribution. MRI had a higher diagnostic positive yield than Octreoscan. Somatostatin analogs, lanreotide and octreotide acetate, were prescribed at 38.5 & 61.5 % of NEN patients respectively and were found to be equally effective at providing symptomatic relief. CONCLUSIONS: This is to our knowledge the first study of a Greek tumor registry and one of the few European Registries providing information regarding clinicopathologic characteristics and therapies in patients with neuroendocrine tumors of various origin sites, beyond GEP NENs. FAU - Nikou, George C AU - Nikou GC AD - Neuroendocrinology Section, 1st Department of Propaedeutic Internal Medicine, Laiko University Hospital, Athens, Greece. FAU - Pazaitou-Panayiotou, Kalliopi AU - Pazaitou-Panayiotou K AD - Unit of Endocrinology and Endocrine Oncology, Theagenio Cancer Hospital, Thessaloniki, Greece. FAU - Dimitroulopoulos, Dimitrios AU - Dimitroulopoulos D AD - Gastroenterology Department, Agios Savas Cancer Hospital, Alphathens, Greece. FAU - Alexandrakis, Georgios AU - Alexandrakis G AD - Gastroenterology Department, NuIotaMuTauS Hospital, Alphathens, Greece. FAU - Papakostas, Pavlos AU - Papakostas P AD - Oncology Department, Hippokrateion Hospital, Athens, Greece. FAU - Vaslamatzis, Michalis AU - Vaslamatzis M AD - Oncology Department, Evangelismos Hospital, Athens, Greece. FAU - Kaldrymidis, Philippos AU - Kaldrymidis P AD - Department of Endocrinology, Metaxa Cancer Hospital, Piraeus, Greece. FAU - Markussis, Vyron AU - Markussis V AD - Ipsen epe, Athens, Greece. FAU - Koumarianou, Anna AU - Koumarianou A AD - Hematology-Oncology Unit, Fourth Department of Internal Medicine, Attikon University Hospital, Medical School, National and Kapodestrian University of Athens, Rimini 1, 12462, Haidari, Athens, Greece. akoumari@yahoo.com. CN - "G-NET-Registry" investigators LA - eng PT - Journal Article DEP - 20160212 PL - England TA - BMC Endocr Disord JT - BMC endocrine disorders JID - 101088676 SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Female MH - Gastrointestinal Neoplasms/epidemiology/pathology MH - Greece/epidemiology MH - Head and Neck Neoplasms/epidemiology/pathology MH - Humans MH - Incidence MH - Male MH - Middle Aged MH - Neuroendocrine Tumors/*epidemiology/pathology MH - Pancreatic Neoplasms/epidemiology/pathology MH - Prospective Studies MH - Registries/*statistics & numerical data MH - Young Adult PMC - PMC4752769 EDAT- 2016/02/14 06:00 MHDA- 2016/12/30 06:00 PMCR- 2016/02/12 CRDT- 2016/02/14 06:00 PHST- 2015/04/28 00:00 [received] PHST- 2016/02/05 00:00 [accepted] PHST- 2016/02/14 06:00 [entrez] PHST- 2016/02/14 06:00 [pubmed] PHST- 2016/12/30 06:00 [medline] PHST- 2016/02/12 00:00 [pmc-release] AID - 10.1186/s12902-016-0089-7 [pii] AID - 89 [pii] AID - 10.1186/s12902-016-0089-7 [doi] PST - epublish SO - BMC Endocr Disord. 2016 Feb 12;16:8. doi: 10.1186/s12902-016-0089-7.