Introduction:
Biliary cystadenoma is an extremely rare clinical entity, even more so
when located in the extrahepatic biliary tree in comparison to their
intrahepatic counterparts [1]. It accounts for less than 5% of all
cystic lesions of liver [2]. Less than 50 cases are reported in
existing medical literature. It is typically seen in middle aged female
and thought to have hormonal factors like estrogen and progesterone
responsible for its pathogenesis [3]. Many a times, it is hard to
diagnose due to its vague clinical signs and symptoms, prolonged
clinical course and difficult radiological interpretations. Although
there are no cases of extrahepatic biliary cystadenomas presenting with
gastric outlet obstruction and ours is the first of its kind. The case
report was realized according to international Surgical CAse REport
(SCARE) guidelines [4].