Abstract Library

#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,

#2950 Hemicolectomy for Neuroendocrine Neoplasms of the Appendix - Is It Really Necessary?

Introduction: Appendical neuroendocrine neoplasms (ANENs) are rare. Limited data is available regarding prognosis and optimal treatment strategy in those tumors

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author:

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

Keywords: appendix, neuroendocrine neoplasms, prognosis, hemicolectomy,

#2885 Ectopic Neuroendocrine Carcinoma: An Occult Source of ACTH

Introduction: About 250 cases of ectopic ACTH-producing neuroendocrine carcinoma (ACTH-NEC) have been reported; however metastatic ACTH-NEC of unknown primary is very rare. Usually are characterized by having a large cell, small cell, poorly differentiated or anaplastic cell, and Ki-67 index between 40-90%.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Huertas Gnecco B

Authors: Huertas Gnecco B, González Devia D, Alvaréz Figueroa J, Aguirre Matallana D, Cañón Solano D,

Keywords: Ectopic ACTH production, Cushing’s syndrome, Neuroendocrine carcinoma, Paraneoplastic Cushing syndrome, Ectopic Cushing´s syndrome,

#2774 Metastatic Merkel Cell Carcinoma Associated Paraneoplastic Hyponatraemia: Response to Avelumab

Introduction: Merkel cell carcinoma (MCC) is rare, encompassing primary cutaneous neuroendocrine carcinoma.It has an aggressive natural history, and exhibits high response rates to radiotherapy & chemotherapy but often of short duration.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author: Demirel S

Authors: Saunders E, Demirel S, Kim S, Skelly R, Mukesh M,

Keywords: merkel cell carcinoma, paraneoplastic syndrome, hyponatraemia,

#2212 A Rare Case of Paraneoplastic Hypercalcemia Secondary to a Neuroendocrine Pancreatic Tumour (pNET).

Introduction: Paraneoplastic hypercalcemia (HC) is a well-described affection in literature. It can relay on several mechanisms among with bone osteolysis, Parathormone (PTH) related peptide (rp) production, primary hyperparathyroidism, and Calcitriol (CT) secretion. CT secretion-mediated HC is more frequently observed among lymphomas and has only been once reported in pNET.

Conference: 15th Annual ENETSConcerence (2018)

Presenting Author:

Authors: Belaïd A, Dhenin A, Jopart P, Seront E, Grandjean M,

Keywords: paraneoplastic hypercalcemia, pancreatic neuroendocrine tumor, calcitriol,