A lady presented with carcinoma endometrium involving > 50 % of myometrium extending to vagina and positive peritoneal cytology but no involvement of para aortic and pre aortic nodes.What is the stage of disease?

As discussed earlier, 50% myometrial invasion means stage IC, positive peritoneal cytology puts it in stage III-A. Vaginal metastasis means stage III B cancer and since this is the highest stage. Therefore, this patient has endometrial cancer belonging to stage III B.