NO DRUG THERAPY IN PRIMARY CARE (URGENT REFERRAL)
Refer urgently if the prostate feels malignant on digital rectal examination - whatever the PSA. Otherwise consider PSA and DRE in anyone with lower urinary tract symptoms (nocturia, frequency, hesitancy, urgency, retention), erectile dysfunction, or visible haematuria, and refer if the PSA is above the threshold for age: 40-49 above 2.5, 50-59 above 3.5, 60-69 above 4.5, 70-79 above 6.5 micrograms/L. Under 40 and over 79, use clinical judgement - Person to receive a diagnosis or ruling out of cancer within 28 days of being referred urgently by their GP for suspected cancer.
Adult-only condition - paediatric section not applicable
NICE NG12 Suspected cancer: recognition and referral, recommendations 1.6.1-1.6.3 (NCBI Bookshelf NBK555330)
A hard, irregular prostate goes on the urgent pathway on its own - a normal PSA does not undo that finding, and waiting for one is how these get missed. The age bands exist because the prostate enlarges with age and a flat cut-off sends too many seventy-year-olds and too few forty-year-olds.
- Do not take the PSA within the specific windows that falsely raise it: an active urinary infection, in the 48 hours after ejaculation or vigorous exercise, after a digital rectal examination, or after prostate instrumentation.
- Finasteride and dutasteride roughly halve the PSA. In a man on either, double the reading before comparing it with the threshold.
- Lower urinary tract symptoms are far more often benign prostatic hyperplasia than cancer - but the symptoms do not distinguish them, which is why the examination and the PSA are the decision and not the history.
- Bone pain with lower urinary tract symptoms is metastatic disease until proven otherwise. Refer, do not investigate the back pain first.
- RED FLAG - Spinal cord compression or metastatic bone pain is a presentation demanding urgent action, not just PSA/DRE-threshold referral.