Rezumat: The phyllodes tumors are rarely found, accounting for up to
1% of cases. Phyllodes tumors tend to grow quickly, but they
rarely spread outside the breast. In 2003, the World Health
Organization classified the phyllodes tumors into three
subtypes (benign, borderline and malignant), according
to various clinicopathological characteristics, including
the degree of stromal cell atypia and stromal overgrowth,
tumor necrosis, the status of mitosis and the tumor margin.
In this paper we present a case of giant phyllodes tumor of
the breast in a young woman, with its clinicopathological
particularities and the different treatment options. Cuvinte cheie: phyllodes tumors, borderline, radiotherapy,chemotherapy.