Abstract Library

#3074 Medullary Thyroid Carcinoma and DIPNECH: An Unexpected Association

Introduction: Medullary thyroid carcinoma (MTC) is a neuroendocrine tumour of the C-cells of thyroid gland. Diffuse idiopathic pulmonary neuroendocrine cells hyperplasia (DIPNECH) is a rare condition, thought to be primarily a neuroendocrine proliferative process which can develop into carcinoid tumours.

Conference: 17th Annual ENETSConcerence (2020)

Presenting Author:

Authors: Lima Ferreira J, Marques B, Elvas A, Simões de Carvalho F, Fonseca A,

Keywords: medullary thyroid cancer, DIPNECH, neuroendocrine tumour, carcinoid tumour, pulmonary nodules,

#2218 More than Rare Pheochromocytomas: Bilateral and Hemorrhagic, Giant and Metastatic

Introduction: Pheochromocytomas (PCC) are rare neuroendocrine tumors. These catecholamine-secreting tumors, with an average size of 4.9cm, are multiple in 10% of cases. About 10% are malignant but distant metastases are rare. Non-traumatic adrenal hemorrhage is an unusual potentially fatal event seen in PCC.

Conference: 15th Annual ENETSConcerence (2018)

Presenting Author: Peralta Ferreira M

Authors: Peralta Ferreira M, Sousa Fernandes M, Roque R, Matos C, Strecht J,

Keywords: pheochromocytoma, giant, hemorrhagic, metastatic, bilateral,

#1866 NET – Incidental Findings: Small, Silent and Innocent?

Introduction: Neuroendocrine tumours (NETs) are rare neoplasms, with an overall incidence of 2 cases per 100,000 individuals per year. This number is increasing due to improved diagnosis, classification and higher imaging sensitivity, which lead to discovering of small and clinically insignificant NETs.

Conference: 14th Annual ENETSConcerence (2017)

Presenting Author: Roque R

Authors: Peralta Ferreira M, Strecht J, Alberto Teixeira J, Glória L, Roque R,

Keywords: NET, incidentaloma,

#139 Association of carcinoid with noncarcinoid neoplasms

Introduction: Carcinoid tumors have a complex disease spectrum. Most have a benign clinical course, but some are aggressive, with invasive growth, metastasis and short survival. In carcinoid tumors, more than 20% are associated with noncarcinoid neoplasms. When the second tumor is a more malignant lesion, the prognosis usually is correlated more closely with the noncarcinoid malignant neoplasm.

Conference: 7th Annual ENETSConcerence (2010)

Presenting Author: Ribeiro J

Authors: Ferreira A, Bonito N, Marques M, Jacinto P, Ribeiro J,

Keywords: carcinoid, noncarcinoid neoplasm,

#37 Gastric GIST with synchronous neuroendocrine tumor of the pancreas, Case Report and Literature Review

Introduction: The Gastrointestinal Stromal Tumors (GIST) are the most common mesenchymal tumors of the gastrointestinal tract. These are rare tumors with an incidence of 15 new cases per million per year. They often occur in individuals over the age of 40 years, without gender predominance. The clinical behavior is variable and benign tumors are the most common. They can develop anywhere in the GI tract, but are more frequent in the stomach and small intestine. The primary treatment, when located, is the surgical resection, which can be complemented with the use of imatinib. The occurrence of neuroendocrine tumors of the pancreas is rare, representing 1-5% of pancreatic cancers, and it is estimated that its incidence does not exceed 5 to one million. The tumors considered nonfunctioning (15-32% of pancreatic neuroendocrine tumors) are not associated with any syndrome, and are usually incidental. They have a slight predominance in males, and are more frequent in the 6th decade of life. Nonfunctioning tumors of islet cells are virtually all malignant tumors, and the treatment consists of surgical resection.

Conference: 7th Annual ENETSConcerence (2010)

Presenting Author: Tavares A

Authors: Tavares A, Ferreira A, Arruda Viveiros F, Cidade C, Maciel J,

Keywords: gastric GIST, pancreatic neuroendocrine tumor, synchronous,