Abstract
A 29-year-old woman who presented to our department because of a mass with bloody discharge at the left nipple had a 2-cm tumor of the left nipple and was diagnosed with adenoma of the nipple by a biopsy. After the biopsy, she was found to be at 6 weeks pregnant. Since the tumor was benign, we decided to perform the surgical resection after her childbirth. Until her delivery, we had observed her clinical course by measuring the size of the tumor with periodic ultrasonography every 6 weeks. The tumor did not enlarge during pregnancy, she was delivered a baby at the 41st week of pregnancy, and the tumor was removed one month after her delivery. Adenomas of the nipple are clinically similar to Paget disease and can be misdiagnosed as invasive carcinoma histologically. These tumors predominantly affect women in their forties, but they are also reported to affect childbearing women around 30 years old in many cases. When we encounter a tumor of the nipple, even in pregnant women, we have to consider the possibility of this disease and treat them not to give excessive therapies that might be crucial.
