Malignant mesothelioma of tunica vaginalis without any risk factors: An uncommon case.

Malignant mesothelioma (MM) of the tunica vaginalis (TV) is a rare tumor. It is seen in elderly patients, with painless scrotal swelling being the most common presentation. The exact etiology is unknown; a few risk factors have been suggested. Here, we present an uncommon case of MM of TV without any known predisposing factors. We also discuss the possible risk factors, clinical presentation, pathological features and the difficulties in diagnosis, and management of this rare malignancy.