Abstract library

5 results for "Capone".
#871 Success with Lutetium-177 DOTATATE Therapy in Cushing’s Syndrome Caused by Functional Pancreatic Neuroendocrine Tumor (pNET) with Ectopic Adrenocorticotropic Hormone (ACTH) Secretion Refractory to Concomitant Everolimus, Pasireotide and Metyrapone
Introduction: We report a case of a 59-year-old female presenting with florid ACTH-dependent Cushing’s syndrome complicated by pulmonary cryptococcal infection.
Conference: 11th Annual ENETS Conference 2014 (2014)
Category: Clinical cases/reports
Presenting Author: Dr Bryan A Chan
Authors: Chan B A, Wyld D, Burge M, Cuneo R, ...
#18 Long-acting release octreotide induce complete response in type 1 gastric carcinoid tumors
Introduction: Gastric endocrine tumors (GET) are increasingly recognized due to expanding indications of upper gastrointestinal endoscopy. Often silent and benign, GET may also be aggressive when sporadic and may sometimes mimic the course of gastric adenocarcinoma. Current incidence of GETs is estimated at around 8% of digestive endocrine tumors. Yearly age-adjusted incidence is around 0.2 per population of 100,000. Gastric carcinoids (ECLomas) develop from gastric enterochromaffin-like cells (ECL cells) in response to chronically elevated gastrin. Type 1 tumors (ECLomas in the course of atrophic gastritis) may occur in conditions of achlorhydria secondary to auto-immune atrophic fundic gastritis. It occurs mostly in women and they are non-functioning tumors, typically found during upper GI endoscopy performed for dyspepsia. ECLomas present frequently as multiple polyps, usually < 1 cm in diameter in the gastric fundus. Type 1 tumors are almost exclusively benign lesions with little risk of deep invasion of the gastric parietal wall. The neoplastic ECL cells become progressively dedifferentiated with an increasing number of Ki-67 immunoreactive (IR) cell nuclei. In addition, there is a substantial decrease in argynophil and IR NE cells that can be visualized by conventional methods. ECLomas secondary to hypergastrinemia should be closely followed for signs of clinical and histopathological tumor progression. Such ECLomas deserve early, active, radical surgical treatment.
Traditionally, gastric carcinoid type 1 (GCA1s) are endoscopically or surgically removed, depending on the number, appearance and size of the tumors. Antrectomy, with surgical excision of the majority of the G cells, is thought to facilitate regression of these tumors by removing the source of excessive gastrin secretion; however, the long-term benefits of antrectomy still remain uncertain. Although proton pump inhibitors are effective in reducing hypergastrinemia-induced gastric acid hypersecretion in GCA2, they do not affect ECL-cell hyperplasia, and therefore their role in GCA1 is limited. Moreover, in selected cases, significant reduction of hypergastrinemia does not prevent development of ECL carcinoid, suggesting that, in addition to hypergastrinemia, other pathogenic or genetic factors may be involved. Treatment with somatostatin analogues (SSA) might impede ECL-cell hyperplasia by suppressing gastrin secretion and/or by a direct anti-proliferative effect on ECL cells. Treatment with SSAs in GCA1 leads to a substantial tumor load reduction, with a concomitant decrease of serum gastrin levels. Published data indicate an important anti-proliferative effect of SSA on ECL cells, providing clinical benefit and obviating, at least temporarily, the need for invasive therapies for GCA1. Morphometric studies demonstrated that, while antrectomy specifically decreased the volume of ECL cells versus the total volume of endocrine cells, octreotide reduces the overall endocrine cell volume. Although the number of treated patients is small, it has been suggested that SSA may exert important anti-proliferative effects either directly, by inhibiting ECL-cells proliferation, or indirectly through suppression of gastrin hypersecretion.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: MD Ricardo Caponero
#2785 Inhibition of Cyclin Dependent Kinases Overcomes MYC-Driven Secondary Resistance to Everolimus in Digestive NETs
Introduction: Dysregulation of the mTOR pathway in digestive neuroendocrine tumours (d-NETs) led to the introduction of Everolimus (EVE) as treatment. EVE significantly increases PFS, but most patients acquire resistance, due to activation of feedback loops.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Basic Science - Signaling pathways, receptors, biomarkers
Presenting Author: Md, PhD Gabriele Capurso
#277 Metastatic Gastrinoma Co-secreting PTHrP and ACTH
Introduction: Metastatic gastrinoma is occasionally associated with tumor secretion of functioning peptides, resulting in additional syndromes.
Conference: 8th Annual ENETS Conference (2011)
Category: Clinical
Presenting Author: Dr Richard W Carroll
#1549 Ectopic Cushing Syndrome in a Patient with Metastatic Medullary Thyroid Carcinoma
Introduction: Ectopic Cushing syndrome was reported in 0.6% of patients with medullary thyroid carcinoma; it usually occurred in metastatic cases and significantly increases mortality.
Conference: 13th Annual ENETS conference 2016 (2016)
Category: Clinical cases/reports
Presenting Author: MD, PhD Raluca Trifanescu