Phyllode tumours of the breast. A review of 21 cases

Twenty-one cases of phyllode tumours of the breast (9 malignant, 4 borderline and 8 benign) were reviewed. Three patients with malignant tumours developed metastases, and all died. Eight patients developed local recurrence, 6 in the malignant and borderline groups and 2 in the benign group. The classification into malignant, borderline and benign groups is a reliable guide for use when deciding on the extent of surgery. Malignant and borderline tumours require local mastectomy, while tumour excision suffices for benign disease. The customary pathological separation of malignant phyllode tumours from primary sarcoma of the breast is questioned.