[Multicystic mesothelioma of the testicular tunica vaginalis].

OBJECTIVES

To report an exceptional case of multicystic mesothelioma of the testicular tunica vaginalis.

METHODS

A 72-year-old male was referred for study of a scrotal mass. Physical examination, blood tests, and ultrasound were performed prior to surgical excision and pathologic study of the lesion.

RESULTS

The ultrasound study showed a multilobar cystic lesion near the spermatic cord. Pathology reported multiple 3-4 mm cystic formations, with rudimentary papillae covered by a hyperchromatic epithelium and vimentin (+), CD 34 (+) immunophenotype.

CONCLUSIONS

Multicystic mesothelioma is a rare form of mesothelioma, easy to recognize but infrequent. This tumor generally affects the peritoneal surface of the pelvis and abdomen; although other less frequent locations have been described testicular location is exceptional. We report the case of a patient presenting with a multicystic mesothelioma of the testicular tunica vaginalis and review the diagnosis, pathology and treatment options for this type of tumor.