NCIt synonyms : Multilocular Peritoneal Inclusion Cyst; Multicystic Mesothelioma of Peritoneum; Multicystic Mesothelioma of the Peritoneum; Multicystic Peritoneal Mesothelioma;
NCIt definition : A mesothelial neoplasm that arises from the peritoneum and usually affects young to
middle aged females. Grossly, it presents as a large multiloculated tumor mass, usually
in the pelvic peritoneum. Histologically it is characterized by the presence of multiple
cysts that are lined by one or more layers of mesothelial cells that do not show atypia.
Patients usually present with abdominal or pelvic mass and pain. The clinical course
is indolent. The tumor may reoccur, but transformation to malignant mesothelioma is
rare.;