A rare benign tumor characterized by the formation of intra-abdominal multilocular cystic masses. It occurs more frequently in women of child-bearing age. In women, the masses are generally located on the peritoneal surface of the uterus and rectum, while in men they are generally located on the peritoneal surface of the bladder and rectum. The tumor can also spread into the upper portions of the peritoneal cavity. Appears to originate from the peritoneal mesothelium.There is no relation with asbestos exposure. Invasive or malignant progression has been described. [from
SNOMEDCT_US]