[Follow-up study of benign breast diseases]

Follow-up study after surgery of the benign breast disease revealed that rates of the recurrence were 50%, 6%, 4%, 3.5% in those who had phyllodes tumor, duct ectasia, intraductal papillary lesion, and multiple fibroadenoma, respectively. Incidences of the subsequent breast cancer development were 14.3% after ADH, 11.7% after ALH, 1.5% after PDWA, respectively. However no difference was found statistically among those diseases(X2 = 2.89). The longest interval between time of the first surgery and time of detection of subsequently developing cancer was 68 months. Accordingly, checks at three times of postoperative third, fifth and eighth year were required for early detection of such subsequent breast cancer, using image diagnostic methods.