Early Detection of Prostate Cancer: Signs and Screening Facts

Prostate cancer is one of the most commonly diagnosed cancers among men, particularly as they grow older.

However, early-stage disease often develops without noticeable symptoms, making awareness and appropriate medical assessment important.

Understanding the prostate cancer early signs, personal risk factors and available screening methods can help men make informed decisions about their prostate health.

Jump to:

• Why Is Early Detection Important?
• What Are the Early Signs of Prostate Cancer?
• Who Has a Higher Risk of Prostate Cancer?
• What Prostate Cancer Screening Tests Are Available?
• When Should Men Consider Prostate Cancer Screening?
• What Happens If a Screening Test Is Abnormal?
• Does Early Detection Always Mean Immediate Treatment?
• When Should You Seek Medical Advice?
• FAQ'S
• Next Steps

Why Is Early Detection Important?

The prostate is a small gland located below the bladder and in front of the rectum. It produces fluid that forms part of semen. Prostate cancer develops when cells within the prostate grow abnormally.

Some prostate cancers grow slowly and may not cause significant problems for many years. Others can be more aggressive and spread to nearby tissues or distant parts of the body.

Detecting clinically significant prostate cancer before it advances may provide more treatment options. However, not every prostate cancer requires immediate treatment. Depending on the cancer's characteristics, active surveillance may be appropriate for some men.

What Are the Early Signs of Prostate Cancer?

One of the challenges of detecting prostate cancer early is that it often causes no symptoms in its initial stages. When symptoms develop, they may indicate prostate enlargement, inflammation or another urinary condition rather than cancer.

Possible warning signs include:

• Changes in urination: Difficulty starting urination, a weak urine stream or difficulty emptying the bladder.
• Frequent urination: Needing to urinate more often, particularly during the night.
• Blood in the urine or semen: Blood may indicate a urinary or reproductive tract problem that requires assessment.
• Discomfort during urination: Pain or burning can occur with several conditions affecting the urinary tract.
• Persistent pelvic or back pain: Ongoing pain may require investigation, particularly when accompanied by other concerning symptoms.
• Unexplained weight loss: This can occur in advanced cancer but is not specific to prostate cancer.

These symptoms do not automatically mean cancer is present. Benign prostatic hyperplasia (BPH), urinary tract infections and prostatitis can produce similar complaints.

Men experiencing persistent or unexplained symptoms should seek medical assessment rather than waiting for additional signs to develop.

Who Has a Higher Risk of Prostate Cancer?

Although prostate cancer can affect men of different ages, certain factors increase the likelihood of developing the disease.

Age: The risk increases as men grow older, particularly after age 50.

Family history: Having a father or brother diagnosed with prostate cancer can increase risk, especially when the relative was diagnosed at a younger age or multiple family members are affected.

Inherited genetic factors: Certain inherited gene changes, including BRCA2 mutations, are associated with a higher risk of prostate cancer.

Other health factors: Obesity has been associated with a higher risk of developing aggressive prostate cancer. However, risk factors do not determine whether an individual will develop the disease.

Men with a strong family history or known inherited risk may benefit from discussing screening earlier than men at average risk.

What Prostate Cancer Screening Tests Are Available?

Screening involves checking for possible signs of cancer before symptoms develop. It differs from diagnostic testing, which investigates existing symptoms or abnormal findings.

Two commonly discussed screening methods are the prostate-specific antigen blood test and the digital rectal examination.

Prostate-Specific Antigen (PSA) Blood Test

A PSA test measures the level of prostate-specific antigen in the blood. PSA is produced by prostate cells, and elevated levels can sometimes indicate prostate cancer.

However, an elevated PSA does not confirm cancer. Prostate enlargement, inflammation, infection and other factors can also increase PSA levels. Conversely, a normal result does not completely rule out prostate cancer.

Depending on the result and the patient's risk factors, a doctor may recommend repeating the test, monitoring PSA levels over time or conducting further investigations.

Digital Rectal Examination (DRE)

A digital rectal examination involves a doctor gently inserting a gloved, lubricated finger into the rectum to assess the prostate's size, shape and texture.

The examination may help identify an unusual lump, firmness or other abnormalities. However, it cannot detect every prostate cancer and is generally considered alongside other clinical information.

Your doctor can explain whether a DRE is appropriate based on your symptoms, examination findings and screening preferences.

When Should Men Consider Prostate Cancer Screening?

Screening decisions should take into account age, family history, overall health and personal preferences.

In Singapore, there is no universal recommendation for routine prostate cancer screening in every asymptomatic man because the benefits and potential harms of population-wide screening remain uncertain.

Men aged 50 and above may wish to discuss PSA testing with their doctor. Those with a strong family history or certain inherited genetic risk factors may need to consider the discussion earlier.

Screening is a personal decision. It is important to understand that testing can identify cancers that might never cause symptoms, potentially leading to additional investigations or treatment that may not ultimately be necessary.

Men who already have urinary symptoms or other concerning changes should seek diagnostic assessment rather than treating the situation as routine screening.

What Happens If a Screening Test Is Abnormal?

An abnormal screening result does not necessarily mean prostate cancer is present. Further assessment helps determine whether the finding is significant.

Depending on the circumstances, the next steps may include:

• Repeat PSA testing: This can help determine whether an elevated result persists.
• Clinical examination: A doctor may review symptoms, medical history and prostate examination findings.
• Prostate MRI: Imaging can help identify areas that may require further investigation.
• Prostate biopsy: Small tissue samples are collected and examined under a microscope to determine whether cancer cells are present.

Not every man with an elevated PSA requires an immediate biopsy. The decision depends on the overall risk assessment and findings from previous investigations.

Does Early Detection Always Mean Immediate Treatment?

No. If prostate cancer is diagnosed, treatment depends on the cancer's stage, grade, likelihood of progression, the patient's overall health and personal preferences.

Some men with low-risk, slow-growing cancer may be offered active surveillance. This involves regular monitoring through PSA testing, clinical assessment and other investigations when appropriate.

Other cases may require treatment such as surgery, radiotherapy or hormone therapy, depending on the disease's characteristics.

The goal is to manage the cancer appropriately while considering potential treatment effects on urinary function, sexual health and quality of life.

When Should You Seek Medical Advice?

Consider consulting a doctor if you experience persistent changes in urination, blood in your urine or semen, unexplained pelvic discomfort or other symptoms that concern you.

Seek urgent medical attention if you suddenly cannot pass urine, experience severe pain or develop new leg weakness or loss of bladder or bowel control alongside back pain.

These symptoms can have several causes, but prompt assessment is important to identify conditions that require urgent treatment.

FAQ'S

Next Steps

If you are concerned about prostate cancer or have a family history of the disease, discuss your risk factors and screening options with a doctor.

Also have a doctor assess persistent urinary changes or blood in the urine or semen to determine the underlying cause.