Watchful Waiting
Actively monitoring rather than treating now — a deliberate choice, not a delay.
What it means
Monitoring a condition closely rather than treating it immediately, with a defined plan for what is checked and when.
It is chosen because treating early has not been shown to improve outcomes, and the treatment itself carries risk. Small aortic aneurysms and some low-risk prostate cancers are both managed this way for exactly that reason.
It is not the same as being on a waiting list, and it is not nothing being done — that distinction is the source of most of the anxiety it causes.
In practice
In urology, vascular, oncology and paediatric letters.
"Active surveillance" is the same idea with a more reassuring name, used particularly in prostate cancer.
Why it matters
Get the schedule in writing — what is monitored, how often, and by whom. Watchful waiting fails when the follow-up quietly lapses.
Ask what would trigger treatment, so you know what the monitoring is watching for.
Ask who is responsible for calling you back. This is the single commonest way people fall out of surveillance.
Clinically reviewed by Dr Mohammad Zubair Khan, GMC 7563469
Last reviewed
August 30, 2026