Final answer:
Benign prostatic hyperplasia (BPH) is the most common cause of urinary tract obstruction in men. Treatments vary from medication to surgery depending on the severity. Prostate cancer and other tumors also cause urinary issues but are less common causes of obstruction.
Step-by-step explanation:
The most common cause of urinary tract obstruction in men is typically due to enlargement of the prostate gland, known as benign prostatic hyperplasia (BPH). The prostate, which normally doubles in size during puberty and begins to enlarge again around age 25, can cause constriction of the urethra when it abnormally grows. By age 60, approximately 40 percent of men experience some degree of BPH, increasing to as much as 80 percent by age 80.
Treatments for BPH include medication for mild to moderate symptoms and surgery for severe cases. Prostate cancer, while a common cancer among men, also leads to urinary problems, but it is not typically the most common cause of urinary tract obstruction. Other causes such as urethral tumors, urinary bladder tumors, and stricture of the urethra can also lead to obstruction.