The fallopian tubes are thought to be the source of some ovarian cancers. It is rare for cancers to spread from other parts of the body to the fallopian tubes; they typically spread to the ovaries. Peritoneal cancer develops in the peritoneum, the lining that covers the surface of the ovaries and other organs in the abdominal cavity.
Although these cancer types differ in origin and other factors, ovarian, fallopian tube and peritoneal cancers are often treated with the same approach and techniques.