ESR2 and phyllodes tumor: 10 Sapino Sapino A A Bosco Bosco M M Cassoni Cassoni P P Castellano Castellano I I Arisio Arisio R R Cserni Cserni G G Estrogen receptor-beta is expressed in stromal cells of fibroadenoma and phyllodes tumors of the breast Estrogen receptor-beta is expressed in stromal cells of fibroadenoma and phyllodes tumors of the breast Mod Pathol.