Prostate cancer and bone lesions

A lesion is an area of bone that looks different on an X-ray, CT, MRI or bone scan. In prostate cancer, a lesion may represent cancer affecting bone, but imaging findings can also have non-cancerous explanations. Doctors consider its pattern, the bones involved, pain, blood tests and the known cancer history before deciding what it means.

Bone involvement can cause pain or make a bone more vulnerable to fracture. Lesions near the spine may affect nerves if swelling or structural change presses on the spinal cord. The scan report is therefore only one part of the assessment.

Share new pain, reduced movement, falls and changes in walking with your cancer team. Ask whether further imaging or a specialist review is needed. Treatment may address the prostate cancer throughout the body, reduce pain in a particular area, or protect bone strength. Bone-strengthening therapy, radiotherapy and targeted radioisotope therapy may be discussed according to the location and overall treatment plan.

Seek emergency help for sudden severe back or neck pain, new weakness or numbness in the legs, difficulty walking, or loss of bladder or bowel control. These can signal pressure on spinal nerves. Also seek prompt care after a fall if there is severe pain, swelling or inability to use a limb, because a weakened bone may be injured.

Ask where the lesions are, whether they look typical of cancer, whether a fracture risk or nerve pressure is present, and which scan or blood test is next. Discuss safe activity, pain relief, dental checks before bone treatment, and how the team will judge whether the plan is helping.