Active surveillance: being watched instead of treated

Your team has judged that your cancer is growing slowly enough, or is small enough, that treating it immediately would expose you to real harms — incontinence, sexual dysfunction, surgical risk — to prevent something that may never cause you a problem. So instead they watch it closely, with a plan to treat if it changes. You are not being denied treatment or left to it. You are on a monitoring protocol with defined rules.

The name does most of the damage. *Watchful waiting* and *active surveillance* both sound like an absence of care, and people commonly report feeling they have been put to one side. In practice active surveillance is more intensive monitoring than most treated patients receive.

It exists because of a genuine finding in cancer medicine: some cancers, particularly low-grade prostate cancer, grow so slowly that most people who have them die with them rather than of them. Treating every one of those would mean subjecting large numbers of people to lasting side effects for no gain.

The schedule depends entirely on the cancer. What every good surveillance plan shares is that it is written down, it is regular, and it has explicit triggers for changing course.

• Regular blood tests where a marker exists — PSA in prostate cancer is the most familiar example.
• Scheduled imaging, such as MRI, at set intervals rather than in response to worry.
• Repeat biopsies at defined points for some cancers, to check the grade has not changed.
• Clinical review, where someone examines you and asks about symptoms.
• Agreed thresholds — a rate of change, a grade, a size — that would move you to treatment.

The last one matters. Choosing surveillance is not irreversible, and preferences legitimately change over time.

This is the part clinicians under-discuss and patients find hardest. You have been told you have cancer, and then told the plan is to leave it alone. Many people describe a low background hum of unease that spikes sharply around test dates.

• Anxiety before tests is near-universal and tends to settle into a pattern people learn to anticipate — see coping with scan anxiety.
• Some people find detail reassuring and want every number; others find it feeds rumination. Both are legitimate, and you can tell your team which you are.
• Booking appointments early in the day and asking for results promptly shortens the waiting, which is usually the worst part.
• Partners and family often carry this badly too, particularly if they think the correct response is to be relentlessly positive.

Surveillance depends on the appointments actually happening, across years, often through changes of consultant, hospital system and address. People do drift out of it, and the consequences are real.

1. Keep your own record of every test and result, rather than relying on being recalled.
2. Diarise the next appointment as soon as you leave the last one, and chase it if it does not arrive.
3. Tell your family doctor you are on active surveillance so it is in your primary care record.
4. If you move or change hospital, ask explicitly for the surveillance protocol to be transferred.
5. If you have dropped out, go back. Re-entering monitoring is a normal request, not an awkward one.

The My Journey section of this site keeps appointments, questions and results on your own device if you want somewhere to hold them.