Peritoneal cancer is a rare cancer. Peritoneal cancer is often detected at an advanced stage because the symptoms are not obvious in the early stages, making it difficult to diagnose.

Fallopian tube cancer is one of the rare gynecological cancers. Older postmenopausal women are the group most commonly affected. There is increasing evidence that ovarian cancer begins in the fallopian tubes, so the risk factors for fallopian tube cancer are similar to those for ovarian cancer, including genetic risk. and did not give birth.