Phyllodes tumors of the breast are rare, accounting for less than 1% of all breast tumors. They tend to grow quickly, but they rarely spread.
Phyllodes tumors are rare breast tumors that start in the connective tissue and are most common in women in their 30s and 40s. Learn more.
Most Phyllodes tumors are benign, but 10 percent are malignant (cancerous). Cancerous Phyllodes tumors are an unusual presentation of breast cancer.
Learn more about borderline and malignant phyllodes tumours, how they are diagnosed and treated.
Phyllodes tumors (from Greek: phullon leaf), also cystosarcoma phyllodes, cystosarcoma phylloides and phylloides tumor, are typically large, fast-growing.