<prompt> Cystosarcoma phylloides is tumor ofBreastLiverColonUterus  <response>: Ans. a Breast. Ref. Baily Love, Surgery, 22ndpg.552CYSTOSARCOMA PHYLLOIDES is benign tumor of the breast. It presents as a huge mass in breast. Its histological pattern is variegated. Its a misnomer as its relatively benign, but potentially malignant tumor. 