NCIt related terms : Phyllodes tumor, malignant; Cystosarcoma phyllodes, malignant;
NCIt definition : A phyllodes tumor with sarcomatous stroma. The sarcomatous component is usually of
the fibrosarcomatous type. Liposarcomatous, chondrosarcomatous, osteosarcomatous,
or rhabdomyosarcomatous differentiation may also occur in the stroma. It may recur
and metastasize following surgical resection. The lung and skeleton are the anatomic
sites most frequently involved by metastases.;