Biliary Ascariasis Mimicking Colonic Tumor Infiltration of the Biliary System.

Ascariasis is a common problem in developing countries with poor hygiene and sanitation. It is endemic in India and usually seen in the northern states. Biliary ascariasis is an uncommon cause of obstructive jaundice. We present a case of carcinoma of hepatic flexure of colon in which the patient developed biliary ascariasis and posed a diagnostic challenge as it mimicked tumor infiltration of the biliary system.