Radiation seed implant for prostate cancer

Seed implantation is a form of brachytherapy. A specialist uses imaging and thin needles to position the seeds through the skin between the scrotum and anus, usually while you are under anaesthesia or sedation. Some seeds give radiation over a period and remain in place; the team explains what to expect from the specific type used.

Suitability depends on tumour features, prostate size, urinary function, previous treatment and whether cancer is confined to a suitable area. Difficulty passing urine is especially relevant because swelling after the procedure can temporarily make urination harder. Other options include external radiotherapy, surgery, or selected targeted radioisotope therapy.

Tell the team about blood-thinning medicines, urinary symptoms, allergies, bowel conditions and previous operations. Arrange transport and follow instructions about fasting and medicines. Afterward, drink according to your care plan, take prescribed medicines, avoid strenuous activity until cleared, and expect some urinary frequency, burning, blood in the urine or soreness. Keep every follow-up visit so urinary function and treatment response can be checked.

Ask for written guidance about contact with pregnant people or children if your seeds emit radiation after placement. The advice depends on the seed type and is specific to your treatment.

Contact the treatment team promptly for worsening pain, fever, increasing blood in the urine, inability to pass urine, or severe bowel symptoms. Seek emergency help if you cannot urinate, feel faint, develop severe abdominal pain, or have heavy bleeding.

Ask whether the implant is temporary or remains in place, how urinary symptoms will be managed, what restrictions apply after treatment, and how the seeds will be checked. Ask how this option compares with external radiotherapy or prostate removal surgery for continence, bowel function, erections and recovery.