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Malignant tumor arising from the serosal membrane of the tunica vaginalis.
Mean age 60 years, patients are older than germ cell tumor patients. Rare cases have been reported in children (Khan et al. 1997).
Mesothelioma arises from tunica vaginalis but envelops and invades the testicular parenchyma.
Radical inguinal orchiectomy is the treatment of choice. Retroperitoneal lymph-node dissection and postoperative radiotherapy or chemotherapy has been suggested.
It is an aggressive tumor, with high recurrence rate and metastatic disease.
It is usually a solid mass causing thickening of the tunica vaginalis in the context of hydrocele with occasional papillae on the surface. The tumor may grossly involve the testis.
Paratesticular mesothelioma shows epithelial pattern in the majority of the cases (70%), or biphasic (30%). The sarcomatoid subtype is...