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Trop Parasitol. 2019 Jul-Dec;9(2):124-126. doi: 10.4103/tp.TP_15_19. Epub 2019 Sep 18.

Filariasis presenting as a solitary testicular mass.

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Department of Pathology, Himalayan Institute of Medical Sciences, Swami Rama Himalayan University, Dehradun, Uttarakhand, India.


In an endemic country like India, the occurrence of filariasis is very common, especially in the states of Uttar Pradesh, Bihar, Jharkhand, Odisha, Andhra Pradesh, and Tamil Nadu. The present study describes the case of a male from a nonendemic state who presented with a testicular lump. Fine-needle aspiration cytology (FNAC) of the lump revealed many adult filarial worms. The appearance of adult filarial worms in different sites, other than lymph nodes and lymphatic vessels, are relatively rarer and should always be reported. Filariasis remains asymptomatic for a long time and responds very well to treatment if diagnosed early. Despite the availability of multiple diagnostic options, FNAC holds a great importance in diagnosing filariasis, especially in cases where there are normal eosinophil counts and no peripheral filarial parasite. Finally, careful examination of cytological smear for the parasite in high-risk groups is helpful in labeling the disease in early asymptomatic states.


Filariasis; testicular fine-needle aspiration cytology; testis

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