Fingernail 'diamond window' check can spot early cancer warning signs says doctor. Up to 40,000 people are diagnosed with the illness every year in the UK yet a finger test you can do at home ...

However, when Ashley performed the test in the hospital, she couldn't spot the diamond shape. "[My nail] was pretty large, rounded, along with a rounded top of the finger.

A finger test that can be performed at home could potentially detect early signs of lung cancer. The disease progresses more rapidly than other types of cancer, with around 46,000 people being ...