Mesothelioma of the tunica vaginalis.
D000328:Adult; D006801:Humans; D008297:Male; D008654:Mesothelioma / Q000473:pathology* / Q000601:surgery; D009362:Neoplasm Metastasis; D009364:Neoplasm Recurrence, Local; D013736:Testicular Neoplasms / Q000473:pathology* / Q000601:surgery