Müllerian adenosarcoma of the cervix: differential diagnosis, histogenesis and review of the literature.

A new case is reported of müllerian adenosarcoma, presenting as a 'benign cervical polyp' protruding through the vulva of a 44 year-old woman admitted with abnormal vaginal bleeding. This report emphasizes the importance of a careful examination of the stroma and special features of the entrapped glands in order to contribute to an earlier and proper diagnosis. The literature is reviewed and the probable histogenesis of this tumor and differential diagnosis with embryonal rhabdomysarcoma (sarcoma botryoides), adenofibroma, malignant mesodermal tumor and carcinosarcoma is discussed.