Prostate cancer starts in the prostate gland, a walnut-sized organ that makes fluid for semen
The prostate sits below the bladder and in front of the rectum. In prostate cancer, cells in this gland begin to grow abnormally. Some prostate cancers grow slowly and may never cause serious harm. Others grow faster and can spread to bones, lymph nodes, or other parts of the body.
Most prostate cancer is found in men over 50, though it can occur at any age. African American men and men with a family history of prostate cancer have higher risk. The disease is often found during routine screening or when a man sees a doctor about urinary symptoms.
Key Takeaways
- Prostate cancer may cause no symptoms at all, especially in early stages, which is why screening matters for men at higher risk.
- Urinary symptoms like difficulty starting or stopping urination, weak stream, or frequent urination can signal prostate cancer but also occur with benign prostate enlargement.
- Pain in the lower back, hips, or pelvis, or pain during ejaculation, may indicate cancer that has spread beyond the prostate.
- A doctor can order a PSA blood test or digital rectal exam to check for prostate cancer, though neither test is perfect.
- Many men with prostate cancer live for years without treatment, while others need immediate care depending on how fast the cancer grows.
Early prostate cancer often produces no symptoms at all
In its earliest stages, prostate cancer may not cause any noticeable signs. A man might feel completely normal and have no reason to suspect anything is wrong. This is why screening—through blood tests or physical exams—matters for men at higher risk, particularly those over 50 or with family history.
Because early cancer can be silent, many cases are found by chance during a routine doctor visit or when a man goes in for an unrelated reason. Once symptoms do appear, the cancer has often been growing for some time.
Urinary symptoms that may signal prostate cancer
When prostate cancer does cause symptoms, they often involve urination because the prostate surrounds the urethra, the tube that carries urine out of the body. Common urinary signs include difficulty starting or stopping urination, a weak or interrupted urine stream, needing to urinate more often than usual (especially at night), and pain or burning during urination.
It is important to know that these same symptoms can come from benign prostate enlargement, a common condition in older men that is not cancer. A doctor's exam is the only way to tell the difference. If urinary symptoms are new or worsening, mention them at your next appointment.
Pain and other signs that cancer may have spread
If prostate cancer spreads beyond the gland, it often goes to nearby lymph nodes or to the bones, particularly in the lower back, hips, and pelvis. Men with advanced cancer may feel pain or stiffness in these areas, pain during ejaculation, or blood in the urine or semen.
Unexplained weight loss or fatigue can also occur with advanced disease. These symptoms warrant a doctor visit, though they can have other causes. The point is to report anything new or unusual rather than assume it is minor.
How doctors screen for and diagnose prostate cancer
Two main tests are used to look for prostate cancer. The PSA test measures a protein called prostate-specific antigen in the blood; higher levels can signal cancer but also occur with benign conditions. The digital rectal exam (DRE) involves a doctor feeling the prostate through the rectal wall to check for lumps or hardness.
Neither test is perfect. Some men with high PSA levels do not have cancer, and some men with cancer have normal PSA. If either test is abnormal, a doctor may order an ultrasound or a biopsy, in which a small tissue sample is taken and examined under a microscope. A biopsy is the only way to confirm cancer.
Understanding your risk and when to talk to a doctor
Risk factors for prostate cancer include age over 50, African American ancestry, family history of prostate cancer, and possibly obesity or diet high in red meat. Men with one or more risk factors should discuss screening with their doctor, who can explain the benefits and drawbacks of testing.
If you have urinary symptoms, pain in the lower back or pelvis, blood in urine or semen, or a family history of prostate cancer, bring it up at your next visit. Your doctor can decide whether screening or further testing makes sense for your situation.
What happens after a prostate cancer diagnosis
If a biopsy confirms cancer, your doctor will order more tests to learn how fast it is growing and whether it has spread. This information determines your treatment options, which may include surgery, radiation, hormone therapy, chemotherapy, or in some cases watchful waiting—monitoring the cancer without immediate treatment.
Many prostate cancers grow slowly, and some men die of other causes before the cancer causes problems. Others grow faster and need prompt treatment. Your age, overall health, and the cancer's characteristics all factor into the decision about what to do next.
Frequently Asked Questions
Can you have prostate cancer with no symptoms?
Yes. Many men have prostate cancer for years without noticing anything wrong. This is why screening is recommended for men at higher risk. Symptoms often appear only after the cancer has been growing for some time.
Does a weak urine stream always mean prostate cancer?
No. A weak stream is more commonly caused by benign prostate enlargement, a normal part of aging in many men. Only a doctor's exam can tell the difference. If your stream changes, mention it at your next appointment.
What does a PSA test actually measure?
PSA is a protein made by the prostate. Higher levels can signal cancer, but they also rise with age, infection, or benign enlargement. A single high PSA does not mean you have cancer; your doctor will look at trends and other findings.
Is prostate cancer always fatal?
No. Many men with prostate cancer live for years or decades, especially if it is found early or grows slowly. Treatment options range from surgery and radiation to monitoring without immediate treatment, depending on the cancer's speed and spread.
Should all men be screened for prostate cancer?
No. Screening has benefits and risks. Men over 50, African American men, and men with family history should discuss screening with their doctor. Men under 40 without risk factors typically do not need routine screening.