Extreme pleomorphic stromal cellular infiltration of the cervix and the corpus uteri was demonstrated by curettage in a 29-year-old woman with menorrhagia. The histological classification was not decisive and a hysterectomy was performed. The histological picture may be compatible with a malignant disease such as a stromal sarcoma or a lymphoma of Hodgkin or non-Hodgkin type, or with an inflammatory or immunologic disease. The clinical course, however, indicates a benign disease.