A CASE OF MALIGNANT PHYLLODES TUMOR OF THE BREAST UNDER 2cm IN DIAMETER WITH LIPOSARCOMATOUS DIFFERENTIATION

We have experienced a case of malignant phyllodes tumor of the breast with liposarcomatous differentiation. A 53 year-old woman was admitted to the hospital because of a painless right greast tumor. On physical examination, a 1.5cm sized, clear and hard tumor was present at the lateral half of the right breast (CD ar-eas). Ultrasonography revealed a clear margin with the lateral shadow, a low ratio of length and breadth of the tumor, and a mosaic of low and high echoic pattern. With manmography, it had a clear margin and halo. From an excisional biopsy, it was diagnosed as the malignant phyllodes tumor of the breast with liposarcoma-tous differentiation. Modified radical mastectomy (Bt+Ax) was carried out. No axillary lymph node metastasis was observed. She had no radiation therapy nor chemotherapy, but she has been free from recurrence of liposarcoma one year and 10 months after the surgical teatment.