Peritoneal cytology in malignant mixed müllerian tumors of the uterus

Peritoneal cytologic studies (10 ascitic fluids, 18 peritoneal washings) were performed on 28 patients with malignant mixed müllerian tumors of the uterus. The frequency of recovery of malignant cells from the peritoneal cavity was directly related to stage of disease and depth of myometrial invasion. In stage I, positive peritoneal cytology was of greater prognostic importance than depth of invasion: all patients with negative cytology are alive without evidence of disease; all patients with positive cytology are dead.