Filariasis is a major concern, particularly in endemic regions. The majority of patients harbouring the parasite may remain asymptomatic for years. Here, we present six patients who were sent for routine cytological examination to rule out neoplastic pathology, in whom cytology identified filarial infestation. The main purposes of our paper are to highlight the importance of fine needle aspiration cytology (FNAC), a cheap and quick investigation to detect the microfilaria from tissue swelling and body fluids, and to point out that clinicians practising in endemic regions should always consider filarial infestation in patients presenting with longstanding swelling.
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