UNUSUAL CAUSE OF BILIARY OBSTRUCTION IN AN ASYMPTOMATIC PATIENT

Abstract

Benign tumors arising from the extra hepatic biliary tree are very rare, and are reported to occupy 6% of all tumors of the bile ducts. In benign tumors, adenoma and papilloma are the most common ones. Adenomas of the extra hepatic biliary tree usually present clinically with features of obstructive jaundice or chronic right upper quadrant pain. Herein, we report a case of a 77-year-old woman with right lower limb weakness secondary to left subdural hemorrhage being diagnosed incidentally with extra and intrahepatic biliary obstruction secondary to distal common bile duct lesion on radiological examination. It was initially misinterpreted as a common bile duct calculus. This diagnosis was of utmost importance because of the malignant potential of these benign tumors. Our study sheds light on the common pitfall in radiological diagnosis in such case between calculus and mass lesion and how to avoid it.