Bilateral malignant phyllodes tumor of breast

case report

Abstract

The phyllodes tumor of the breast is a rare entity that accounts for less than 1% of breast tumors, 2 to 3% of fibroepithelial tumors and the most common sarcoma in the breast, with peak of incidence at 35–55 years, and only in 3% of cases there is bilateral. Because of macroscopic similarity to the fibroadenoma, imaging exams are insufficient to preoperative diagnosis. The usual treatment of PT is surgical resection with free safety margins, extending mastectomy in cases of borderline tumors, malignant or recurrent. The adjuvant treatment should be considered in recurrent tumors, malignant or after metastasis, however its effectiveness is unproven. This paper reports the case of a female patient, 47 years-old, sent to the service of University Hospital Oswaldo Cruz after lumpectomy in right breast and pathological diagnosis of malignant phyllodes tumor, being held simple mastectomy right breast. About a year and a half after surgery, there was local recurrence and malignant phyllodes tumor in the contralateral breast, and the patient was resubmitted to surgery, but now followed by adjuvant chemotherapy and radiotherapy. After six months of treatment, patient developed metastases in the chest, abdomen and head, following in palliative treatment.