Gestational Trophoblastic Disease, also known as GTD, is a cancerous growth that appears in the lining of the uterus either immediately before, during or after a pregnancy. According to the American Cancer Society, the condition is most commonly diagnosed using blood tests and imaging equipment, such as a CT scan, an X-ray or an MRI. KnowCancer.com states that the most common form of treatment is chemotherapy and, if necessary, radiation treatment. In advanced cases, a hysterectomy, or removal of the uterus, may be necessary.
The hormone hCG (human chorionic gonadotropin) is most commonly associated with pregnancy, but there are some other reasons why tests might show elevated hCG levels.