There is a form of polyp which usually occurs singly near the exit of a main lactiferous duct. It can be removed by local excision, like polypi in the nose, cervix, colon, and bladder; yet in the breast, as well as in other locations, it is important to search carefully for multiple lesions and to consider even this benign growth as a possible omen that the person will be more subjected to cancer than others who are free of any polyp. This paper reviews and illustrates a method of recognition and treatment of these rare lesions which has proved worthwhile in a series of 30 patients, 24 of whom were followed from 5 to 16 years. None of the entire group has developed carcinoma. All credit for originality in this method of management is given to others (Babcock,1 Wakeley,2 Chester and Bell,3 and Haagensen, Stout, and Phillips