RESUMO
Cystosarcoma phyllodes is an uncommon breast tumor with a wide variety of pathologic and clinical features. The surgical management of cstosarcoma phyllodes is controversial and the tumor may recur after management by excision of the mass. We performed a retrospective study of 18 patients treated for cystosarcoma phyllodes between September 1983 and March 1991 at Songklanagarind Hospital. All patients received surgical treatment (eleven excision of the mass, three wide excision and four mastectomy). The mean follow up was 48.3 months (1 week – 92 months). One patient was found with local recurrence after treatment by excision of the mass. It is suggested that the treatment for cystosarcoma phyllodes should be wide excision for benign cystosarcoma phyllodes. Mastectomy has been indicated for large tumor and for malignant cystosarcoma but axillary dissection is not worthwhile.