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': 'In BPH most common lobe involved is - \nSelect and explain. \nA. Lateral, B. Posterior, C. Median, D. Anterior', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Anatomical division of Prostate\n\nProstate has 5 lobes :\n\nAnterior lobe\n\nis a small isthmus connecting the two lateral lobes in front of the urethra.\n\nPosterior lobe\n\nit connect the two lateral lobes behind the urethra. It lies behind the median lobe and the ejaculatory ducts. Carcinomas are most common in this lobe.\n\nMedian lobe\n\nlies behind the upper part of the urethra, in front of the ejaculatory ducts just below the neck of the bladder.\nBHP arises in this lobe.\n\nLateral lobes\n\nlie one on each side of the urethra.\n\nZonal or surgical division of Prostate\n\nProstate has 3 distinct zones\n\n\nThe peripheral zone (PZ) - accounts for 70% of volume of young adult prostate\nThe Central zone (CZ) - accounts for 25%\nThe transition zone (TZ) - accounts for 5%\n\n\nCarcinoma of prostate arises most commonly in → the peripheral zone\nBenign prostatic hyperplasia originates in → the transition zone', 'role': 'assistant'}]