In situ intraduct carcinoma of the breast: a long term follow-up study.

Twenty-eight patients with in situ intraduct carcinoma of the breast are reviewed. Two patients had bilateral tumours. The numbers of patients treated by wide local excision, simple mastectomy and mastectomy with axillary dissection were approximately equal; none of these patients died of carcinoma. The conclusions regarding prognosis and treatment of in situ intraduct carcinoma of the breast are discussed.