AN ACTH SECRETING PANCREATIC TUMOR PRESENTING WITH CUSHINGʼS SYNDROME DIAGNOSED BY ENDOSCOPIC ULTRASOUND GUIDED FINE NEEDLE ASPIRATION

Abstract

There is a growing body of evidence demonstrating the efficacy of endoscopic ultrasound in the diagnosis of pancreatic neuroendocrine tumors. We report a case of a 49 year old man presenting with Cushing's syndrome due to ectopic adrenocorticotropic hormone production. Endoscopic ultrasound was used to localize and diagnose an adrenocorticotropic hormone secreting pancreatic neuroendocrine tumor. This rare tumor is implicated in less than one percent of Cushing's syndrome cases. This is the first report of a primary pancreatic adrenocorticotropic hormone secreting tumor diagnosed by endoscopic ultrasound guided fine needle aspiration.