A CASE OF NON-INVASIVE BREAST CANCER DIAGNOSED BY MRI AND DUCTOENDOSCOPY

A 50-year-old woman was seen at the hospital upon noticing bloody nipple discharge from solitary duct of the left breast. Cytodiagnosis and CEA of the discharge were negative. Mammography, ultrasound of the breast and ductgraphy disclosed no apparent findings. However, magnetic resonance imageing (MRI) revealed multiple shadows with higher signals than that in breast tissues. Together with the ductoendoscopic findings suggested was malignancy that spread to the ducts.Microdochectomy leads to the diagnosis of non-invasive ductal carcinoma, corrborating the histpathological findings. In MRI of the breast using a contrast medium Gd-DTPA, the contrast medium, due to its nature, appears early in the cancer tissue, including that of non-invasive ductal carcinoma, before it dose in the surrounding tissues. The combination of MRI and ductoendoscopic findings of the breast will improve preoperative diagnosis and be an effective examination to determine the indications for breast conserving surgery.