Peritoneal cytology in endometrial cancer - an investigation of the source of endometrial cancer-cells in the peritoneal-cavity.

In order to identify the source of endometrial cancer cells in the peritoneal cavity, the incidence of positive peritoneal cytology was assessed according to pTNM classification. In 74 cases free peritoneal fluid in the pelvic cavity was aspirated. In the absence of fluid smears of the cul-de-sac was made by scraping (45 cases). Five of 15 positive aspirated cases were pT1N0 or pT2N0. These five cases underwent surgery alone and are still alive with no evidence of disease. Malignant cells which supposedly gain access to the pelvic cavity via the fallopian tube have low potential for implantation.