Microfilariae coexistent with the cytology of adenocarcinoma gall bladder: An unnoticed comorbidity

Lymphatic filariasis is endemic in 250 districts in 20 states and union territories of India. Microfilariae have been reported in body cavity fluids and cytological evaluation of various lesions including benign as well as malignant neoplasms. Here, we present a rare case of incidentally found microfilariae in a cytological smear from gallbladder adenocarcinoma. Along with supporting the cytology as an important tool in detection of asymptomatic filariasis, we wish to draw the attention toward a more dedicated approach to eliminate this disease entity and toward unnoticed comorbidities in carcinoma patients.