A delay in diagnosing cancer is not automatically negligence, cancer can be genuinely difficult to identify early, and some delays change nothing. A claim becomes possible where a competent clinician would have acted sooner, and where the delay changed your treatment or your prognosis.
DELAYED DIAGNOSIS - Where a condition was identifiable earlier than it was identified, it covers symptoms not investigated, a referral not made, a scan or sample misreported, and a follow up that never happened.
When might a delay be negligent?
The question is never simply whether the diagnosis came late, it is whether the steps taken along the way were reasonable. The patterns that most often raise a question are:
Symptoms that met the criteria for urgent referral, where no referral was made
A scan, biopsy or blood result reported incorrectly, or reported correctly and not acted on
An abnormal finding where no follow up was arranged
Repeated presentations with the same symptoms, attributed each time to something less serious
A screening invitation not sent, or a screening result mishandled
Did the delay change anything?
This is the question a claim turns on, and it is often harder to answer than whether the delay happened.
Cancer that would have been treated the same way, with the same outcome, had it been found three months earlier may not support a claim, however avoidable the delay was. Where a delay allowed the disease to progress, so that treatment became more extensive, or options that would have been available were lost, the claim is about that difference.
Answering it requires oncological evidence about what stage the disease would have been at, and what would have followed. It is not something anyone can judge from the outside.
What about missed screening?
The national screening programmes work on invitation and recall, and failures can happen at either end. An invitation that was never sent, a result recorded against the wrong patient, or an abnormal result that produced no recall are all situations worth looking at.
Screening is not diagnostic, and a normal screening result that later proves to have missed something is not on its own a failing. What matters is whether the sample or image was interpreted to the standard expected at the time.
What would need to be proved?
That the care fell below the standard a competent clinician would have provided, and that this made a material difference to your treatment or prognosis. Both need independent expert evidence, usually from a specialist in the relevant cancer and sometimes from a radiologist or pathologist as well.
How long do I have?
Three years is the usual limit, but what matters is when the clock starts. It can run from the date you first realised your injury might be connected to your care rather than the date of the treatment itself.
Different rules apply to children, and to adults who lack the capacity to manage their own affairs. If you are unsure where you stand, it is better to ask early than to assume.
Support
If you are living with a cancer diagnosis, or supporting someone who is, these organisations offer help that has nothing to do with any legal question.
Macmillan Cancer Support · 0808 808 00 00
Samaritans · 116 123
Wondering whether a delay changed your outcome?
It is a fair question and a difficult one. We can look at it with you, free and without obligation.
Frequently asked questions
There are more on our FAQ page.