Ive had a pet scan and pelvic MRI which shows fibroid of 15 cm at largest part and no indications of cancer. Aslo had blood test which came back negative. With a history of breats cancer (ERpos,PRpos,HR2neg) recent mastcetomy, ... hypertension (high blood pressure) history of other cancers history of taking tamoxifen for rbeats cancer treatment or prevention Caucasian women. What has your doctor said about oyur increased risk for uterine cancer, ...