SAN FRANCISCO (EGMN) - More than 75% of venous thromboembolisms linked to gynecologic cancer surgery occur more than a week after the procedure, based on data from 4,162 women aged 18 years and older who had undergone major gynecologic surgery between 1998 and 2008 at a single institution.Few studies have addressed long-term postoperative risk of venous thromboembolism (VTE), and prolonged prophylaxis might be warranted for high-risk cancer patients, said Dr. Abraham Peedicayil of the Mayo Clinic...