What Happens When Prostate Cancer Spreads Beyond the Prostate?

Author: Dr Aqua Asif
Reading Time: 5 minutes
Medically reviewed on: Nov 15 2025 Dr Aqua Asif

A diagnosis of ‘advanced prostate cancer’ can feel overwhelming, it’s important to understand that even advanced disease can often be managed effectively as a long-term condition for many years. Understanding what this term actually means is the first step

Advanced prostate cancer isn’t one single thing. It typically describes two different situations:

1. Locally advanced prostate cancer: The cancer has started to break through the capsule (the outer layer) of the prostate gland, perhaps into nearby tissues like the seminal vesicles.
2. Metastatic prostate cancer: The cancer cells have travelled from the prostate, through the lymphatic system or bloodstream, to other parts of the body. Common sites include lymph nodes and bones.

While metastatic prostate cancer is not curable, it is important to know that it can often be managed very effectively as a long-term condition for many years with modern treatments.

Key Takeaways

• Advanced prostate cancer means the cancer has spread either just outside the prostate (locally advanced) or to distant parts of the body (metastatic).
• Symptoms may include bone pain, frequent urination, fatigue, and weight loss, with emotional impacts such as anxiety or low mood being common.
• Diagnosis involves PSA blood tests, MRI scans and PSMA PET CT imaging, physical biopsy samples and ongoing monitoring to track how the cancer responds to treatment.
• Treatment for metastatic disease is ‘systemic’ (treating the whole body) and aims to control the cancer, manage symptoms, and maintain quality of life.
• Key prostate cancer treatment options include hormone therapy (ADT), chemotherapy, radiotherapy, and newer targeted drugs.
• A specialist multidisciplinary team (MDT) is essential for planning and managing your care. An effective MDT team combines expertise from urologists, uro-radiologists and oncologists.

What Is advanced prostate cancer?

It is important to distinguish between the two main types of ‘advanced’ prostate cancer.

Locally advanced prostate cancer

This is when the cancer is at stage T3 or T4. It means the tumour has grown through the prostate’s outer layer (the capsule). It may have grown into the structures right next to the prostate, but it has not spread to distant lymph nodes or bones. This is still a serious condition, but the treatment approach is often different from metastatic cancer and may still have curative intent.

Metastatic prostate cancer

This is what most people mean when they refer to advanced prostate cancer. It is also known as stage M1. This means the cancer has spread (metastasised) beyond the prostate area to other parts of the body. Even though it is in a different part of the body, such as a rib, it is still made of prostate cancer cells and is treated as prostate cancer.

Symptoms of advanced prostate cancer

In many cases, even advanced prostate cancer may cause no symptoms, particularly if it has only spread to lymph nodes. When advanced prostate cancer symptoms do appear, they often relate to where the cancer has spread.

• Urinary symptoms: If the main tumour in the prostate is large, it can press on the urethra (the water pipe) and cause a weak flow, needing to pass urine more often (especially at night), or a feeling of not emptying your bladder.
• Bone pain: This is the most common symptom of metastatic disease. It is often described as a persistent, dull ache, for example, in the back, hips, or ribs, that doesn’t go away.
• Fatigue: A feeling of extreme tiredness, weakness, or lack of energy that is not relieved by rest is common.
• Other symptoms: These can include unexplained weight loss, a poor appetite, or, in rare cases, numbness or weakness in the legs. This can be caused by the cancer pressing on the spinal cord (a condition called spinal cord compression), which requires urgent medical attention.

These symptoms can also be caused by many other, less serious conditions. However, it is important to have them checked by a doctor.

Risk factors

Advanced prostate cancer begins as localised prostate cancer which has progressed through the stages of prostate cancer. Without treatment or with aggressive disease types, it can eventually spread. But not all prostate cancers behave this way.

Several factors can increase your risk:

• Age: The risk increases significantly in men over 50.
• Family history: Your risk is higher if a close relative (like a father or brother) was diagnosed, especially at a young age (under 60)
• Ethnicity: Black men are more likely to develop aggressive prostate cancer.

Prostate cancer growth is known to be fuelled by the male hormone testosterone. Lifestyle factors, such as obesity, may also play a role, which is why some men explore diet tips to support their overall health.

Diagnosis and monitoring

If advanced prostate cancer is suspected, your specialist team will conduct several tests to confirm the diagnosis and, importantly, to stage the cancer to find out where it is in your body.

• PSA blood test: A rising or significantly high PSA level can be an indicator of advanced disease.
• Imaging scans: An MRI scan provides a detailed picture of the prostate and the tissues immediately around it. To check for spread elsewhere, your team will use scans like a CT scan, a whole-body MRI, a bone scan, or a more advanced PSMA-PET scan.
• Biopsy: While not always necessary if metastases are clearly seen on a scan, a biopsy (taking small tissue samples) from the prostate or a metastatic site may be done to confirm the diagnosis and grade the cancer’s aggressiveness.

Once treatment begins, you will be monitored closely with regular PSA tests and periodic scans to check how well the treatment is working.

Treatment options for advanced prostate cancer

Treatment for advanced disease is very different from treatment for localised cancer. For metastatic cancer, the goal is to control the cancer’s growth, manage symptoms, and maintain a good quality of life. Your prostate cancer treatment options will be managed by a multidisciplinary team (MDT), usually led by an oncologist (a cancer specialist).

Hormone therapy

As prostate cancer uses testosterone to grow, the main treatment is almost always androgen deprivation therapy (ADT). This is given as an injection or implant to lower the body’s testosterone levels. This can slow the cancer’s growth and reduce symptoms effectively, often for many years. It is frequently combined with other powerful hormone tablets.

Chemotherapy

Chemotherapy (using drugs like docetaxel) is often used, sometimes at the very start of treatment along with hormone therapy. It can be effective at controlling the cancer and managing symptoms.

Radiation therapy

Radiotherapy (using high-energy X-rays) is not used to cure metastatic cancer, but it is extremely useful for managing it. It can be directed at specific areas, such as a painful spot in a bone, to relieve pain and strengthen the bone.

Targeted therapy and bone-strengthening drugs

Newer ‘targeted’ drugs, such as PARP inhibitors, may be an option for some men whose cancer has specific genetic mutations. Other drugs, like bisphosphonates, are often given to help strengthen bones and reduce the risk of fractures.

Palliative and supportive care

Supportive care (or palliative care) is a vital part of your treatment, starting from diagnosis. It focuses on managing symptoms like pain, fatigue, and anxiety to help you live as well as possible. This includes access to specialist nurses, pain teams, and prostate cancer support services.

Potential complications and risks

Managing advanced prostate cancer also means watching for potential complications.

• Bone problems: Cancer in the bones can weaken them, which can lead to pain or, less commonly, fractures (breaks).
• Spinal cord compression: This is a rare but urgent complication. If cancer in the spine presses on the spinal cord, it can cause leg weakness, numbness, or problems with bladder or bowel control. This is a medical emergency requiring immediate attention.
• Treatment side effects: Hormone therapy can cause side effects like hot flushes, fatigue, and loss of libido. Your team will work with you to manage these.
• Emotional impact: Living with a long-term condition can understandably cause anxiety or low mood. Accessing prostate cancer support is a key part of your care.

Living with advanced prostate cancer

Many men live full and active lives for many years with advanced prostate cancer. Managing the condition becomes part of a new routine. Staying as healthy as possible can help you feel better and cope with treatments. This can include gentle exercise (as advised by your team), eating a balanced diet, and getting enough rest.

It is important to be open with your care team about any symptoms or side effects you are experiencing, as there is almost always something that can be done to help.

The importance of expert diagnosis and management

Receiving any cancer diagnosis can feel overwhelming. The most important first step is ensuring your diagnosis is accurate and your staging is precise. This is the foundation of your entire treatment plan.

The expertise of our GMC-registered consultant urologists, consultant uro-radiologists and oncologists is vital for accurate diagnosis at all stages.

 At The Focal Therapy Clinic, our consultants have deep expertise in prostate cancer diagnosis and treatment options. 

We provide a comprehensive diagnostic service and offer a second opinion to review your case. 

At The Focal Therapy Clinic, our specialists are experts in:

• Interpreting complex PSA data
• Interpreting complex imaging from MRI Scans and PSMA PET CT scans 
• Reviewing Biopsy results 
• Offering second opinion consultations to review your case
• Managing urinary symptoms that may arise

This ensures you have all the information you need before being referred to the right oncology team for your advanced cancer care.

While treatments like focal therapy are designed for localised prostate cancer, the expertise 

Book a consultation with our MDT to review your case.

Frequently Asked Questions

References

National Institute for Health and Care Excellence (NICE). (2021). Prostate cancer: diagnosis and management (NG131). Available at: https://www.nice.org.uk/guidance/ng131

Prostate Cancer UK. (2023). Advanced prostate cancer. Available at: https://prostatecanceruk.org/prostate-information/advanced-prostate-cancer

Cancer Research UK. (2022). Treatment for advanced prostate cancer. Available at: https://www.cancerresearchuk.org/about-cancer/prostate-cancer/metastatic-cancer/treatmenthttps://www.cancerresearchuk.org/about-cancer/prostate-cancer/metastatic-cancer/treatment

Parker, C. C., et al. (2018). Radiotherapy to the primary tumour for newly diagnosed, metastatic prostate cancer (STAMPEDE): a randomised controlled phase 3 trial. The Lancet, 392(10162), pp. 2353-2366.

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