Benign Prostatic Hyperplasia

Q: Benign prostatic hyperplasia (BPH) typically originates in which zone of the prostate gland?

Transition zone. Benign prostatic hyperplasia (BPH) predominantly develops in the transition zone of the prostate, which surrounds the urethra. Prostate cancer typically originates in the peripheral zone.

Also written as BPH.

Benign Prostatic Hyperplasia (BPH) is an androgen-dependent proliferation of prostatic tissue in the transitional zone, causing obstructive and irritative urinary symptoms in many older men.

Benign Prostatic Hyperplasia (BPH / Nodular Hyperplasia)

Extremely common — present in significant numbers by age 40; prevalence reaches 90% by the eighth decade.
Does not occur in males castrated before puberty or in those with androgen insensitivity.
Androgen-dependent proliferation of both stromal and glandular elements.
DHT (dihydrotestosterone) is the key mediator, synthesized from testosterone by 5α-reductase type 2 in the prostate.
DHT is 10x more potent than testosterone in binding androgen receptors.

Read this in Male Reproductive System Pathology

Benign Prostatic Hyperplasia (BPH)

% of men by 8th decade; located in inner/transitional zone
Gland typically weighs 60-100g; well-circumscribed nodules
DHT (from testosterone via 5-alpha-reductase type 2) binds nuclear androgen receptors → promotes growth
DHT is 10x more potent than testosterone
Does not occur in castrated males or those with androgen insensitivity

Read this in Quick Guide: Male Reproductive System Pathology, Testis, Penis

What our notes say

Benign Prostatic Hyperplasia (BPH) is an androgen-dependent proliferation of prostatic tissue in the transitional zone, causing obstructive and irritative urinary symptoms in many older men. (Male Reproductive System Pathology)
Benign prostatic hyperplasia — a classic presentation of lower urinary tract symptoms in an elderly male. (Pathology Practical Revision Guide)
Discuss benign prostatic hyperplasia and prostate carcinoma — pathogenesis, morphology, and clinical distinction. (Exam Prep: Skin Infections, Psoriasis & Pemphigus)
Males: most common cause = benign prostatic hyperplasia (BPH) (Bladder Cancer & Urothelial Neoplasms: Types, Risks, Pathogenesis)
Benign Prostatic Hyperplasia (BPH / Nodular Hyperplasia) (Male Reproductive System Pathology)
It details conditions such as hypospadias, squamous cell carcinoma of the penis, cryptorchidism, testicular torsion, germ cell tumors, prostatitis, benign prostatic hyperplasia (BPH), and prostate carcinoma. (Penile & Testicular Pathologies: Hypospadias, Tumors, Torsion – Male Reproductiv)

Study material on Benign Prostatic Hyperplasia

Practice questions on Benign Prostatic Hyperplasia

Benign prostatic hyperplasia (BPH) typically originates in which zone of the prostate gland?

Anterior zone
Central zone
Peripheral zone
Transition zone

Answer: D. Benign prostatic hyperplasia (BPH) predominantly develops in the transition zone of the prostate, which surrounds the urethra. Prostate cancer typically originates in the peripheral zone.