Vasitis nodosa and spermatic granuloma of the skin: an histologic study of a rare complication of vasectomy

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Abstract
A 29-year-old man noticed localized painful swelling of the scrotal skin after elective vasectomy. The lesion was excised and its histological examination revealed a diffuse inflammatory, partly granulomatous infiltrate with numerous tubular structures in the dermis and subcutaneous tissues. These ductules were lined by cuboidal epithelial cells and contained spermatozoa. The inflammatory consisted of lymphocytes, plasma cells and histiocytes, but also contained spermatozoa and a few spermatic granulomas. These changes were the sequelae of a vasocutaneous adhesion and fistula; the ductules were the result of epithelial regeneration from the vas deferens and the inflammation with spermatic granulomas was due to extravasated spermatozoa.

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