Unusual Radiological Features of a Breast Cancer Patient Presenting with Nipple Discharge in Hong Kong

A 62-year-old woman was presented with blood stained nipple discharge for many years. Mammograms and ultrasound study revealed a prominent left nipple, increase in nipple vascularity and nipple calcifications. Ductogram revealed an obstruction at the proximal part of the discharging duct. Surgical excision of the nipple demonstrated encapsulated papillary carcinoma. The excision margins appeared to be clear, but tumor tissue was found within 1 mm from the deep margin. Ultra-filtered sulfur colloid sentinel node examination was negative. Thus, simple left mastectomy was performed. The specimen was confirmed as ductal carcinoma in situ of the left breast.