What should you know about external radiation for prostate cancer?

Before treatment, imaging and simulation help the team locate the prostate and plan how beams enter the body. You are positioned carefully for each visit, and the machine moves around you without touching you. External radiation may be used as a local treatment, after an operation, or with hormone treatment, depending on the cancer and the overall plan. It does not make you radioactive. Effects can include tiredness, urinary urgency or burning, looser stools, rectal irritation and sexual changes. Your team can explain which effects are more relevant to your plan and how they will be reviewed.

Follow the preparation instructions for each appointment, including any guidance about bladder filling or bowel emptying. Tell clinicians about urinary symptoms, bowel conditions, medicines and previous pelvic treatment. Wear comfortable clothing and plan rest around visits if fatigue develops. Keep follow-up appointments even when you feel well. Discuss alternatives such as brachytherapy or prostate removal surgery, including how each option may affect continence, bowel function, sexual function and daily routines.

Call the treatment team quickly if you cannot pass urine, develop fever, notice significant blood, have severe abdominal or pelvic pain, or cannot keep fluids down. Seek urgent care for sudden severe symptoms. Difficulty passing urine can require prompt assessment because treatment-related irritation may narrow or obstruct the urinary passage.

What is the aim of radiation in my treatment plan? How will the prostate and nearby organs be located? What preparation is needed? Which symptoms need same-day advice? When will follow-up begin, and what other options should I compare?