Phyllodes tumors of the breast are a rare tumor, accounting for only 1% of breast tumors. It has a fast growth, resembling fibroadenoma in its shape. It is classified as benign, borderline and malignant. It has a high relapse rate, with 27% in malignant tumors. And globally they metastasize in about 4% of the cases, being usually hematologically. From the moment of the diagnosis made by the anatomopathological study, the best therapeutic option consists of surgical resection with free safety margins, and it can be extended to mastectomy without axillary dissection in the case of malignancy or tumors with a larger diameter. The use of adjuvant therapies still remains questioned.