Abstract Library

#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,