Testicular Mesothelioma is a rare form of mesothelioma accounting for less than 1% of all mesothelioma cases. It forms on the membrane that lines the male testes, otherwise known as tunica vaginalis. Testicular Mesothelioma appears as solid whitish-yellow nodules, which, if left unchecked, can encase the scrotum and thicken.
Occasionally the tumor associated with testicular mesothelioma is a secondary tumor, with the primary tumor residing in the abdominal cavity. In this scenario, a diagnosis of a primary peritoneal mesothelioma with metastasis to the testes may be concluded.
Testicular mesothelioma is often symptomless. Occasionally it creates a fluid buildup in the scrotum known as hydrocele, or a painless mass may appear there. Often, it is discovered after an unrelated surgery, and is frequently misdiagnosed for some other condition, such as a hernia. Undergoing a tissue biopsy is the only way to fully determine whether a testicular growth is indeed testicular mesothelioma.
The most common form of treatment for testicular mesothelioma is surgery. This procedure, an orchiectomy, entails removing the affected testicle, along with the spermatic cord, and in some cases, nearby lymph nodes may also need to be removed. This surgery can be followed by chemotherapy and/or radiation therapy to eliminate any remaining cancer cells in the testes and prevent their return.