Expert Consensus on the Diagnosis and Treatment of Malignant Mesothelioma of the Tunica Vaginalis Testis

Malignant mesothelioma of the tunica vaginalis testis (MMTVT) is a rare malignancy originating from mesothelial cells of the testicular tunica vaginalis. Due to its insidious onset and local aggressiveness, most patients are diagnosed at an advanced stage. The treatment modalities for MMTVT primarily include surgery, chemotherapy, and radiotherapy. With the advent of immunotherapy, patient survival has further improved. To standardize and homogenize the diagnosis and treatment of MMTVT in China, the Chinese Alliance of Research for Mesothelioma, combining existing research evidence and nationwide expert opinions, has formulated a national expert consensus on the clinical diagnosis and treatment of MMTVT. This consensus encompasses epidemiology, diagnosis, treatment, prognosis, and follow‐up.