Pay attention to these cancer symptoms you're most likely to ignore.
Changes in Fingernails -- A brown or black streak or dot under a fingernail can mean skin cancer, while enlarged ends of the fingers with curved nails can be a sign of lung cancer. Pale or white nails could mean your liver's not functioning properly, perhaps due to cancer.
German Federal Archive/Wikimedia Commons
Christian Hartmann, Mario Anzuoni/Reuters
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