label: Multicystic Mesothelioma
label_lc: multicystic mesothelioma
description: "A mesothelial neoplasm that arises from the peritoneum and rarely the pleura. It is characterized by the presence of multiple cysts lined by flattened or cuboidal mesothelial cells. There is no evidence of significant cytologic atypia or increased mitotic activity. It may reoccur. Rare cases of transformation to malignant mesothelioma have been reported."