Abstract Library

#3863 Survival and prognostic factors in appendiceal neuroendocrine tumors (ANET) and goblet cell carcinoma (aGCC)

Introduction: Appendiceal goblet cell carcinomas (aGCC) present with overlapping features of appendiceal neuroendocrine neoplasms (ANET) and adenocarcinomas. A previous study found that ANET with peritoneal metastases have a 5-year survival rate of 7%. Recent studies show that ANET rarely metastasizes, contrary to aGCC. The latest WHO classification excluded aGCC from the group of NETs and classified it as appendiceal adenocarcinomas.

Conference:

Presenting Author: Dijke K

Authors: Dijke K, Levy S, van den Berg J, Tesselaar M,

Keywords: Goblet cell carcinoma, Appendiceal neuroendocrine tumor, Survival,

#3631 Are hemicolectomies still indicated in patients with neuroendocrine tumors of the appendix 1-2cm? A retrospective Europe-wide cohort study

Introduction: Awareness of a potential global overtreatment by performing oncological resections for appendiceal neuroendocrine tumors (aNET) 1-2cm is increasing.

Conference:

Presenting Author: Nesti C

Authors: Nesti C, Bräutigam K, Zwahlen M, Perren A,

Keywords: appendix, neuroendocrine tumor, surgery, hemicolectomy, metastasis, survival,

#1490 Even Malignant Appendiceal Neuroendocrine Tumors Exhibit No Recurrent Chromosomal Alterations

Introduction: Neuroendocrine tumors (NETs) of the midgut are located in the ileum (iNET), caecum or appendix (aNET). Despite of the similar origin, NETs of the ileum and the appendix behave remarkably different. iNETs show high malignant potential, which manifests with early lymph node or liver metastases. Genetically, the loss of chromosome 18 (Ch18) in 60-74% of cases is the most frequent alteration in iNETs. aNETs are often incidental findings, rarely show metastases, and no chromosomal alterations are known.

Conference: 13th Annual ENETSConcerence (2016)

Presenting Author: Sipos B

Authors: Nann D, Nieser M, Sperveslage J, Henopp T, Vokuhl C,

Keywords: NET,

#1484 Neuroendocrine Tumors of the Appendix Are Probably Harmless Neoplasms

Introduction: Appendiceal neuroendocrine tumors (aNETs) have a 5-year survival rate between 74% and 95% according to recent data from Cancer Registry of Norway and the United States, respectively. However, in the daily clinical practice one almost never encounters patients suffering from aNETs with distant metastasis or dying of the disease.

Conference: 13th Annual ENETSConcerence (2016)

Presenting Author: Sipos B

Authors: Weysser A, Nieser M, Kloeppel G, Sipos B,

Keywords: NET,

#1152 Appendiceal Neuroendocrine Tumor: Correlation Between Histopathological Factors

Introduction: Neuroendocrine tumours (NET) of the appendix are rare histopathological neoplasm’s detected following operation for appendicitis. Clinical decisions focuses on different pathological factors for further management. With the aim of defining contemporary patterns of care in surgical practice, a critical review of the records is carried to establish a correlation between different histopathological parameters

Conference: 12th Annual ENETSConcerence (2015)

Presenting Author: Nada H

Authors: Nada H, Anania M, Luong T, Garcia-Hernandez J, Caplin M,

Keywords: Appendicectomy, Appendix, Carcinoid tumour(s), Neuroendocrine tumors,