There are little data regarding the impact of functional age on tolerance to radiotherapy for gynecologic cancers. A comprehensive geriatric assessment (CGA) tool which measures functional status (including the Instrumental Activities of Daily Living (I-ADL)), among many other important geriatric related conditions, was developed by Hurria and colleagues. Geriatric assessment variables including functional status predicted for toxicity in older patients receiving chemotherapy and surgery for multiple cancer types., 2 We hypothesize that I-ADL can be used to predict treatment tolerance in patients of all ages receiving pelvic and/or paraaortic region radiation therapy for gynecologic malignancies.