A 36-year-old woman complains of a 3-month history of bloody discharge from the nipple. At examination, a small nodule is found, deep to the areola. Careful palpation of the nipple- areolar complex results in blood arrearing at the 3 O'clock position. Mammogram findings are normal. What is the likeliest diagnosis?
Intraductal papilloma Breast cyst Intraductal carcinoma Carcinoma in situ