Final answer:
Urinary retention in men is commonly caused by an enlargement of the prostate gland, or BPH, which constricts the urethra and impacts urinary function.
Step-by-step explanation:
One cause of urinary retention in men is an enlargement of the prostate gland, commonly referred to as benign prostatic hyperplasia (BPH). This condition can lead to constriction of the urethra, causing a number of lower urinary tract symptoms such as a frequent and intense urge to urinate, a weak stream, and a sensation that the bladder has not completely emptied. Treatment for BPH includes medications to relieve pressure on the urethra and surgery for severe cases where a portion of the prostate tissue is removed.