Abstract
Breast carcinoma during pregnancy is relatively rare ; it accounts for 0.5% of breast carcinoma in Japan. Three cases of increasing breast carcinoma during the term of pregnancy are described in this paper. Case 1: A 30-year-old woman complained of a mass in her left breast. Ultrasonography (US) revealed a tumor enlargement at 35 weeks of pregnancy in comparison with that at 26 weeks. Case 2: A 36-year-old woman who was previously treated with a quadrant mastectomy for the upper inner site (Bq + Ax) on her left breast, 4 years later recognized a mass in the upper lateral quadrant. She mentioned no tumors were palpable.before pregnancy. Moreover, US in the 19, 29, and 35 weeks of pregnancy failed to demonstrate any growth. As she found the mass herself with the birth near at hand, it was comfirmed by US. Case 3: A 28-year-old woman had a mass in her right breast. Although the size of the tumor acquired with US in the 32 and 36 weeks of pregnancy was 25mm, it became 41mm in size after giving birth. We experienced three rare cases of breast carcinoma growth detected by US during the late term of pregnancy.
