Microfilaria in liver aspiration cytology: an extremely rare finding.

Filariasis is a common public health problem in the Indian subcontinent. The diagnosis can be made conventionally by demonstrating microfilaria in peripheral blood smears. Despite its high incidence it is unusual to find microfilariae in fine-needle aspiration (FNA) cytology smears. Microfilariae have been reported in cytological specimens of various organs, but it is extremely rare to find microfilaria in fine FNA cytology of liver. We report seventh case of microfilaria in liver aspirate in a male patient suffering from gallbladder cancer.