Abstract Library

#4566 Predictive value of high-risk histopathological- and molecular criteria for lymph node metastasis in appendiceal neuroendocrine tumours

Introduction: Appendiceal neuroendocrine tumours (aNET) are rare neoplasms for which consensus is needed for follow-up and additional treatment. To unravel the factors behind aNET which showed lymph node metastasis (LNM) in additional right hemicolectomy (RH), we evaluated high-risk histopathological parameters in aNETs and studied molecular parameters.

Conference:

Presenting Author: Bremer B

Authors: Bremer B, Kyriskozoglou V, El Moumni M, Heideman D, Walenkamp-Hageman A,

Keywords: Appendix NET, High-risk histopathological criteria, Serotonin, Driver mutation, Right Hemicolectomy,

#4236 Do metastatic appendiceal NETs ever develop metachronously after appendectomy or right hemicolectomy?

Introduction: Appendiceal NETs are typically detected incidentally during appendectomy. A recent study reported no cases of metachronous metastases among patients (pts) with primary tumors

Conference:

Presenting Author: Al-Toubah T

Authors: Al-Toubah T, Haider M, Strosberg J,

Keywords: appendiceal net, appendix net, neuroendocrine tumor, right hemicolectomy, appendectomy,

#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,

#3385 Review of appendiceal neuroendocrine neoplasms and pathological features that influence decision for oncological right hemicolectomy

Introduction: Appendiceal neuroendocrine neoplasms (NEN) are typically an incidental finding with 80% diagnosed post-appendectomy in the setting of acute appendicitis. While ENETS recommends that patients with appendiceal NEN >2cm undergo right hemicolectomy (RH) there is uncertainty in how to manage those measuring 1-2cm.

Conference:

Presenting Author:

Authors: Beauchamp K, Thuillier R, Swan K, Cotter M, O'Shea D,

Keywords: neuroendocrine, appendix, oncology, right hemicolectomy,

#2953 Temporal Trends in Incidence, Presentation and Work-Up of Neuroendocrine Neoplasms of the Appendix

Introduction: Although temporal trends in incidence and prognosis of neuroendocrine neoplasms have been described in the literature, data regarding trends in Appendiceal Neuroendocrine Neoplasms (ANENs) is limited.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Twito O

Authors: Twito O, Klein N, Paran H, Avital S, Kravtsov V,

Keywords: appendix, neuroendocrine neoplasms, hemicolectomy, prognosis, temporal trends,