Finger test may reveal early sign of lung cancer

What is the early sign of lung cancer on fingertips?

When you press your fingernails together, do you see a tiny diamond-shaped window of light?If you can't see this gap, you could have finger clubbing, which when the ends of your fingers swell up - and this could be a sign of lung cancer.The condition happens in stages, starting at the base of the nail, which becomes soft. Then the skin next to the nail bed become shiny, after which the nails begin to curve more than normal when looked at from the side.Finally, the of the fingers may get larger and swell due to fluid collecting in the soft tissues of the fingers.