<unk> s (from Greek: phullon leaf), also cystosarcoma<unk> , cystosarcoma<unk>  and<unk> , are typically large, fast-growing masses that form from the periductal stromal cells of the breast. They account for less than 1% of all breast neoplasms.
Phyllodes tumor
Fibroadenoma
Intraductal papilloma
Inverted papilloma
Ductal carcinoma in situ
Acinic cell carcinoma
Coloboma
Lobular carcinoma in situ