Prostate cancer after radiation

Radiation can affect the prostate and nearby bladder, bowel, and sexual tissues. Urgency, a weaker stream, burning, loose stools, rectal discomfort, tiredness, or changes in erections may occur during recovery or later. PSA usually changes gradually after radiation, so a single test is interpreted in context rather than treated as a diagnosis by itself. Your clinician may review symptoms, examination findings, the treatment type, and the pattern of PSA results before recommending imaging or another biopsy.

Keep PSA appointments and tell your team about urinary frequency, difficulty passing urine, bowel bleeding, persistent diarrhoea, or sexual changes. Ask before taking medicines or supplements for these effects, because some can worsen bleeding or interact with other treatment. If further treatment is needed, the plan depends on where cancer is found and what you have already received. Possible options include [Radiotherapy](/treatments/radiation-oncology/radiotherapy/), [Targeted Radioisotope Therapy](/treatments/radiation-oncology/targeted-radioisotope-therapy/), or supportive care. [Prostate Cancer](/conditions/prostate-cancer/) information can help explain the wider condition.

Seek prompt medical advice for inability to pass urine, heavy blood in urine or stool, fever, escalating pelvic pain, or repeated vomiting. Emergency care is appropriate for severe weakness, fainting, chest pain, or severe breathlessness. A gradual change in bowel, bladder, or sexual function should still be reported, even when it is not urgent, because early symptom treatment may improve comfort.

Ask how often PSA will be checked, which delayed effects your treatment can cause, and which symptoms need same-day advice. Discuss whether [Brachytherapy](/treatments/radiation-oncology/brachytherapy/) or [Bone-Strengthening Therapy](/treatments/supportive-and-palliative-care/bone-strengthening-therapy/) has any relevance to your individual situation.