Case of mesothelioma of the tunica vaginalis testis with characteristic findings on ultrasonography and magnetic resonance imaging.

A case of mesothelioma of the right tunica vaginalis testis in a 32-year-old man is reported. Trans-scrotal ultrasonography revealed hydrocele and multiple nodular masses measuring 1.0-4.5 cm in size attached to the parietal vaginal layer. Magnetic resonance imaging demonstrated more clearly nodular masses with irregular surfaces lined on the hydrocele cavity. Histologic diagnosis of the tumor when orchiectomized was mesothelioma. The patient has been free of disease for approximately 3 years since the treatment.