Cheap breath test may detect stomach, oesophageal cancers wi
Scientists have developed a cheap and non-invasive test that can measure the levels of five chemicals in the breath to detect cancers of the oesophagus and stomach with 85 per cent accuracy. The test was 85 per cent accurate overall, meaning that the breath test was good at picking up those who had cancer (80 per cent sensitivity) and was also good at correctly identifying who did not have cancer (81 per cent specificity).

Together, stomach and oesophageal cancer account for around 1.4 million new cancer diagnoses each year worldwide. Currently, the only way to diagnose oesophagal cancer or stomach cancer is with endoscopy -- an expensive, invasive method with some risk of complications.