Abstract
ABSTRACT Objective: To present a patient with multiple endocrine neoplasia type 1 (MEN1) syndrome recently diagnosed with a calcitonin-secreting pancreatic neuroendocrine tumor. Methods: Clinical and diagnostic evaluation, along with intervention, is presented. The relevant literature is reviewed. Results: The patient was a 52-year-old Caucasian man with a history of known MEN1 who had a right parathyroidectomy 10 years prior to admission, completion parathyroidectomy and total thyroidectomy for C cell hyperplasia 3 years prior, and removal of a pituitary adenoma 4 years prior. He was asymptomatic but had persistently elevated serum calcitonin levels. Venous sampling and positron emission tomography–computerized tomography indicated several lesions in the pancreas as the most likely cause of ectopic calcitonin secretion. The patient underwent pylorus-sparing pancreaticoduodenectomy (Whipple procedure). Several well-differentiated neuroendocrine lesions of the pancreas were noted, with lymphatic invasion a...
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