The Ca-125 blood test is often elevated in endometrial adenocarcinomas, and if so, can serve as a tumor marker. Often there are implants on the surface of the outside of the uterus or on the lining of the pelvis. They can even occur inside the ovary. Each time the lining of the uterus bleeds during menses these implants also bleed and can cause pain and adhesions. If inside the ovary it can cause a blood filled ovarian cyst called an endometrioma.
Endometriosis is a benign condition but one that can cause a lot of problems.
Very rarely an endometrial adenocarcinoma can arise in an endometrial implant. There are several types each with several gradations from low grade to high grade malignancies. There is no standard treatment. Each case must be managed separately. The thick muscular wall of the uterus gives rise to the benign leiomyoma and the malignant leiomyosarcoma.