Retroperitoneum And Peritoneum Cancer Care Peritoneal cancer is an often advanced cancer most commonly of Gastrointestinal or Gynecologic origin in which cancer cells form in the tissue lining the peritoneum, which is the tissue lining the abdominal wall and covering abdominal organs. Phone: 347-508-1139 7604 3rd Ave, Brooklyn, NY, 11209 United States Map Other Categories: Health & Beauty » Health Care |