This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Surgery
Benign prostatic hyperplasia first develops in the 
Select and explain. 
A. Periurethral transition zone, B. Peripheral zone, C. Central zone, D. Anterior fibromuscular stroma
A: Periurethral transition zone
Answer: A: Periurethral transition zone 
Explanation: Benign prostatic hyperplasia arises from submucosal glands of periurethral transitional zone with stromal proliferation and adenosis forming a nodular enlargement. It eventually compresses the peripheral zone glands into a false capsule and causes the appearance of typical 'lateral' lobes. Reference : page1345 Bailey and Love's sho practice of surgery 25th edition