The origin and development of benign prostatic hyperplasia. An age-dependent process

Area of Science:

• Urology
• Andrology
• Pathology

Background:

• Benign prostatic hyperplasia (BPH) is a common condition in aging men.
• Its exact cause is unknown but involves prostate epithelial-stromal interactions and hormonal factors.
• BPH originates microscopically in the prostate's transition zone as early as the third decade of life.

Purpose of the Study:

• To describe the natural history and progression of benign prostatic hyperplasia.
• To outline the prevalence and clinical significance of BPH in relation to age and androgens.
• To inform about the lifetime risk of prostatectomy and outcomes of untreated symptomatic BPH.

Main Methods:

• Review of existing literature on BPH etiology, histology, and clinical progression.
• Analysis of age-related changes in the prostate gland.
• Epidemiological data on BPH prevalence and treatment outcomes.

Main Results:

• Microscopic BPH develops in approximately 50% of men with advancing age and androgens.
• Only 50% of men with an enlarged prostate develop clinically significant BPH requiring treatment.
• A 50-year-old man has a 25-40% lifetime risk of prostatectomy in the US.
• Many symptomatic BPH cases remain stable or improve without treatment.

Conclusions:

• Benign prostatic hyperplasia is a common, age-related condition with variable progression.
• Not all enlarged prostates lead to symptomatic disease or require intervention.
• Conservative management or observation may be suitable for a significant number of men with BPH.