Abstract
A 32-year-old woman who had been aware of a mass of the right breast from the beginning of pregnancy of her first baby was seen at the hospital while she was breast-feeding after the delivery. She had an about 5-cm diameter, elastic-soft, and well movable tumor at the C area of the right breast. No axillary and supraclavicualr lymph nodes were palpable. A fine needle biopsy resulted in fibromyxoma like interstitial tissue. Since a possibility of malignancy could not be ruled out completely, a biopsy to remove the tumor was scheduled after her breast-feeding. However, she got pregnant her second baby so that the surgery was postponed. Thereafter the tumor rapidly grew during three months to be 15 cm in diameter, and the patient was seen at the hospital again. We referred her to a general hospital equipped with gynecological and pediatric departments for the purpose of surgery. With a suspicion of phyllodes tumor of the breast without definite diagnosis, right modified radical mastectomy and right axillary lymph node sampling were performed. The histopathological diagnosis was borderline phyllodes tumor without lymph node metastases. The patient's postoperative course was uneventful and she was safely delivered of the second baby. No recurrence has occurred until now.
This paper deals with this case of phyllodes tumor which started to grow rapidly after pregnancy, together with a review of the literature.
