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
Prostatic carcinoma commonly arises from: March 2012 
Select and explain. 
A. Central zone, B. Peripheral zone, C. Transitional zone, D. None of the above
B: Peripheral zone
Answer: B: Peripheral zone 
Explanation: Ans: B i.e. Peripheral zone Zones of prostate & clinical impoance Central zone (CZ) lies posterior to the urethral lumen & above the ejaculatory ducts. Peripheral zone (PZ) lies posteriorly & from this, most carcinoma arises There is a periurethral transitional zone (TZ), from which most benign prostatic hyperplasia (BPH) arises.