A RARE CASE OF ADENOMYOMATOUS HYPERPLASIA OF AMPULLA OF VATER MIMICKING AS PANCREATIC HEAD MASS

Adenomyomatous hyperplasia is an extremely rare lesion encountered in the ampulla of Vater. Less than 50 cases have been described, most of them with clinical consequences of biliary obstruction and misdiagnosing it as a malignancy. Patient underwent extensive surgery pancreatoduodenectomy . There is no accurate diagnostic tool to differentiate the benign nature of adenomyomatous hyperplasia. More extensive operations are often performed due to its malignant nature.