This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
[{'content': 'Lymph nodes not involved in Ca endometrium is: \nSelect and explain. \nA. Para-aortic, B. Presaral, C. Inferior mesenteric, D. Inguinal', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Lymphatic drainage of uterus: Lymph nodes Involved in ca endometrium.... BDC Vol II, 3th ed p 319\n\nUpper lymphatics (from fundus)\nFrom cornua\nMiddle lymphatics (from body)\nLower lymphatics (from cervix)\nPara aortic\nSuperficial Inguinal nodes.\nExternal iliac nodes.\nExternal iliac node, Internal iliac nodes.\n\nBesides these other regional lymph node involved in CA endometrium are:\n\nParametrial LN\nPresacral LN\nPelvic LN\nObturator.', 'role': 'assistant'}]