Cystic microfilarial infestation of the liver: a rare presentation

Cystic liver lesions in an adult may occur for a variety of reasons, most of which are benign in nature. Infiltrating benign lesions in the liver parenchyma may pose a clinical challenge in diagnosis and management. In the case presented herein, a cystic lesion adjacent to the gall bladder and involving the liver parenchyma had to be differentiated from gall bladder carcinoma, which is quite common in India. Parasitic infestation of the liver is an extremely rare presentation and may pose a significant challenge in its diagnosis and management. This case highlights an infrequent presentation and the challenges in the clinical approach and subsequent management.