Cancer Research UK – 27th January 2023
When cancer is diagnosed, doctors will carry out tests to determine how big the tumour is, and whether it has spread into any other tissues or parts of the body.
Once they know that information, they can assign the cancer a stage.
Typically, this ranges from stage 1, meaning the cancer is small and hasn’t spread beyond where it first started, to stage 4, meaning the cancer has spread from where it started to another body organ.
Cancers diagnosed at an earlier stage, before they’ve had the chance to grow and spread, are more likely to be treated successfully. So, minimising any delays to detecting cancers, and therefore catching them at the earliest possible stage, is paramount to improving cancer survival.
However, previous research has suggested that there are inequalities between some groups when it comes to being diagnosed with cancer at later stages.
Research on breast cancer in particular has suggested that there are differences in proportions of patients diagnosed at different stages by ethnic group.
And whilst we know that cancer incidence differs across some ethnic groups, for example, black men are at a greater risk of developing prostate cancer, data on stage at diagnosis across ethnic groups in England has not been robust enough to allow for an analysis that would give us insight into any existing differences, leaving it a gap in our knowledge.
Further information – New analysis reveals Black women in England more likely to be diagnosed with late-stage cancer
Background Research – Fry A, White B, Nagarwalla D, Shelton J, Jack RH. Relationship between ethnicity and stage at diagnosis in England: a national analysis of six cancer sites. BMJ Open2023;13:e062079. doi:10.1136/bmjopen-2022-062079 pmid:36702581