label: Paratesticular Well Differentiated Papillary Mesothelial Tumor
label_lc: paratesticular well differentiated papillary mesothelial tumor
description: "A rare, indolent, usually solitary mesothelial neoplasm that arises from the tunica vaginalis. It is characterized by the presence of a papillary architecture in which the papillae are lined by cuboidal mesothelial cells. Mitotic figures are usually absent. Stromal invasion is absent or minimal. It usually manifests with a hydrocele and less frequently scrotal mass."