system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
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?
assistant
The correct answer is  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.