Benign prostatic hyperplasia arises characteristically in which zone of the prostate?
- A Transition zone ✓
- B Peripheral zone
- C Central zone
- D Fibromuscular stroma
Correct answer: A. Transition zone
Explanation
The transition (periurethral) zone surrounds the proximal prostatic urethra and is the site of benign prostatic hyperplasia, causing urinary outflow obstruction. Carcinoma of the prostate arises predominantly in the peripheral zone, which is palpable on digital rectal examination. Confusing these two zonal distributions is the classic error this item tests.
Reference: Gray's Anatomy for Students, 4th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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