Cervical screening is not a test for cancer. It is a method of preventing cancer by detecting and treating early abnormalities which, if left untreated, could lead to cancer in a woman’s cervix (the neck of the womb). The first stage in cervical screening is taking a sample from the cervix for analysis. A doctor or nurse inserts an instrument (a speculum) to open the woman’s vagina and uses a spatula to sweep around the cervix. Most women consider the procedure to be only mildly uncomfortable.
Early detection and treatment can prevent 75 per cent of cancers developing but like other screening tests, it is not perfect. It may not always detect early cell changes that could lead to cancer.
The NHS cancer screening programme has more information: