Postoperative Hypofractionated Intensity-modulated Radiotherapy Endometrial Cancer

This study looks at a type of radiation therapy called hypofractionated IMRT — which delivers radiation in fewer, larger doses — for women with stage III endometrial (uterine) cancer who have already had surgery. The goal is to find out whether this approach is as safe and effective as standard radiation. **You may be eligible if...** - You have been confirmed with endometrioid-type endometrial cancer - You have had a hysterectomy and full surgical staging - Your cancer is at FIGO Stage III - You have had or are planning chemotherapy - You are in good physical health (ECOG 0 or 1) **You may NOT be eligible if...** - Your cancer has spread to distant organs (metastatic) - You have had previous radiation to the pelvis - You have another serious or unstable medical condition - You have a history of another cancer (except thyroid cancer, skin cancer, or endometrial cancer) Talk to your doctor to see if this trial is right for you.