If you have abnormal vaginal bleeding, your doctor may conduct tests for endometrial hyperplasia. Diagnosing this condition may include a transvaginal ultrasound to measure the thickness of the endometrium. During this test, a small device will be placed in your vagina, and ultrasound waves from the device will help create an image of your pelvic organs. If the endometrium appears to be thick, you may be diagnosed with endometrial hyperplasia.
However, your doctor may also perform a dilation and curettage, endometrial biopsy or hysteroscopy, in which endometrial tissues are taken and studied under a microscope, to test for endometrial cancer.