Bile duct adenoma: a case report and literature review.

BACKGROUND: Bile duct adenoma (BDA) is a comparatively rare disease clinically, therefore, there are relatively few reported cases about it both in China and abroad. CASE PRESENTATION: Herein, we present a 51-year-old man, diagnosed preoperatively with enhanced-contrast abdominal computed tomography, as having a nodule in the left hepatic. The patient underwent a liver tumor resection, and the histological examination revealed bile duct adenoma (BDA). CONCLUSIONS: BDA is an extremely rare benign tumor, which is difficult to distinguish BDA from hepatocellular carcinoma definitely preoperatively, surgical resection is needed as a way of treatment.