Benign Prostatic Hyperplasia (BPH)/Enlarged Prostate

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Overview

Benign prostatic hyperplasia (BPH) is not simply a case of too many prostate cells. Prostate growth involves hormones, occurs in different types of tissue (e.g., muscular, glandular), and affects men differently. As a result of these differences, treatment varies in each case. There is no cure for BPH and once prostate growth starts, it often continues, unless medical therapy is started.

The prostate grows in two different ways. In one type of growth, cells multiply around the urethra and squeeze it, much like you can squeeze a straw. The second type of growth is middle-lobe prostate growth in which cells grow into the urethra and the bladder outlet area. This type of growth typically requires surgery.

Anatomy

Interior Image of Prostate Click to enlarge

The prostate is a walnut-sized gland located beneath the bladder and in front of the rectum. It is surrounded by a capsule of fibrous tissue called the prostate capsule. The urethra (tube that transports urine and sperm out of the body) passes through the prostate to the bladder neck. Prostate tissue produces prostate specific antigen and prostatic acid phosphatase, an enzyme found in seminal fluid (the milky substance that combines with sperm to form semen).

Incidence and Prevalence

It is difficult to establish incidence and prevalence of BPH because research groups often use different criteria to define the condition. According to the National Institutes of Health (NIH), BPH affects more than 50% of men over age 60 and as many as 90% of men over the age of 70.

Benign Prostatic Hyperplasia (BPH)/Enlarged Prostate, Overview reprinted with permission from urologychannel.com
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