This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gynaecological oncology, Subject name: Gynaecology & Obstetrics
[{'content': 'All of the following investigations are used in FIGO staging of carcinoma cervix except : \nSelect and explain. \nA. CECT, B. Intravenous pyelography, C. Cystoscopy, D. Proctoscopy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Investigations permitted by FIGO for clinical staging of Cervical cancer Examination under anaesthesia to assess parametrial and rectal spread Barium enema Proctoscopy Sigmoidoscopy Cytoscopy Intravenous Pyelogram Chest and Skeletal X-rays Reference : Textbook of Gynaecology; Sheila balakrishnan; 2nd edition; Pg no: 260', 'role': 'assistant'}]