00039 PROPHYLACTIC MASTECTOMY IN HIGH-RISK FAMILIES FOR BREAST CANCER AT THE UNIVERSITY HOSPITALS OF LEUVEN - BELGIUM. (1st September 2005) - Leunen, K.; Neven, P.; Christiaens, M. R.; Drijkoningen, M.; Legius, E.; Amant, F.; Berteloot, P.; Vergote, I