Karen Griffin is a 58-year-old mother of two grown children, She has been postmenopausal for at least eight years, but she comes in today complaining of sporadic vaginal spotting during the last month. Karen said her gynecologist performed an endometrial test and told her that although there is a malignancy and surgery will be necessary, the cancer itself is mostly contained to the endometrium. However, there appears to be some minor spread into one of the fallopian tubes. What test did Karen's GYN perform? What type of cancer does she have? What stage is her malignancy? What treatment do you think she can have?