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Hydrocele due to Wuchereria bancrofti Infection

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A 32-year-old Nepalese man had lived in Japan for 2 years before presenting at our hospital with an 8-month history of left hydrocele. He was born and raised in a… Click to show full abstract

A 32-year-old Nepalese man had lived in Japan for 2 years before presenting at our hospital with an 8-month history of left hydrocele. He was born and raised in a lymphatic filariasis-endemic area of Nepal. He had had no respiratory symptoms or eosinophilia. A Giemsa-stained smear (Picture 1; 1,000x) of the peripheral blood collected at night showed morphological characteristics of microfilariae that were compatible with Wuchereria bancrofti: A stained sheath and no nuclei in the tail (Picture 1, arrow). This was confirmed to be W. bancrofti by polymerase chain reactionrestriction fragment length polymorphism. Ultrasonography of the hydrocele (Picture 2) revealed dilated lymphatic vessels (echo-free area) and adult worms (Picture 2, arrowheads) showing the typical filarial “dance sign” (1). Treatment with diethylcarbamazine was successful, and a remarkable decrease in the microfilarial count in the peripheral blood was noted. The patient returned to Nepal where he planned to undergo surgical repair of the hydrocele.

Keywords: medicine; picture; hydrocele due; due wuchereria; bancrofti infection; wuchereria bancrofti

Journal Title: Internal Medicine
Year Published: 2019

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