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[Malignant mesothelioma of the tunica vaginalis: a case report].

A 70-year-old man was referred to our hospital with a painless swelling of the light scrotal contents. Ultrasonography and computed tomographic scan revealed a hydrocele testis and irregular masses in the scrotum. The patient underwent left orchidectomy under the diagnosis of left intrascrotal tumor. Pathological diagnosis was malignant mesothelioma. The patient has not received additional therapy because there has been no evidence of metastasis. He has been free of disease 3 months postoperatively.