Phyllodes Tumor of Breast:A 17 Years Audit of 260 Patients with Biopsy Proven Phyloldes Tumor Treated in our Institute
Phyllodes are rare breast neoplasms with higher rate of local and systemic recurrence. This study presents the results of an audit of all cases of biopsy proven phyllodes tumor presenting to breast services in Liquat National University Hospital Karachi, Pakistan, from 1993 to 2010. Total 260 female patients were retrospectively audited, 151 had benign, 35 borderline and 74 had malignant histology. Mean follow up duration for all types was 2 years. The mean age for benign lesions was 28, for borderline 36.8 and for malignant lesions 41 years. For all histopathological types the mean tumor size was 6.2 cm. It was 5.4 cm for benign, 7.8 cm for borderline and 11.2 cm for malignant lesions. 200/260 (76.9%) patients had breast conservation while 60/260 (23.0%) had mastectomy. Histopathology type and grade has statistically significant relationship with recurrence ( p value .0001 % ) Overall recurrence rate was 20/260 (7.69%) with one patient with malignant phyllodes having recurrence 6 times despite clear margins and two patients with borderline phyllodes having recurrence twice . Tumor recurred in 2/151(1.3% ) of benign , 5.7% borderline ( 2/35 ) and 21.6% malignant ( 16/74 ) cases .Malignant group had 8 (10.8% ) systemic and 12 (16.2%)local recurrences. All patients with local recurrence and involved margins had reexcision except for 2 who had mastectomy with muscles involved posteriorly during the first surgery where re-excision was not possible. mortality rate for malignant phyllodes was 5.4 % ( 4/74 deaths as a result of systemic recurrence ) Conclusion: Phyllodes tumor is an aggressive disease, in our series, grade and type of tumor on histopathology is the significant risk factor for local and systemic recurrence with rate reaching up 21.6% for local and 10.8% for systemic recurrence in malignant lesions.