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: Surgery
[{'content': 'A toddler has few drops of blood coming out of rectum Probable diagnosis is: \nSelect and explain. \nA. Juvenile rectal polyp, B. Adenomatous Polyposis Coli, C. Rectal ulcer, D. Piles', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a. Juvenile rectal polyp Anesthesia and Craniotomy for Patients with Mass Lesions Craniotomy is commonly undeaken for primary and metastatic neoplasms of the brain. Premedication is best avoided when intracranial hypeension is suspected. Hypercapnia secondary to respiratory depression increases ICP and may be lethal. Patients with normal ICP are usually given a benzodiazepine (diazepam orally or midazolam intravenously or intramuscularly). Coicosteroids and anticonvulsant therapy should be continued until the time of surgery.', 'role': 'assistant'}]