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Melanoma lurks in larger skin lesions, NYU researchers find
Date:4/22/2008

higher risk for the disease.

In the new study, Dr. Polsky and his colleagues used a computerized imaging system to measure the lesions in a large database of melanoma cases. They evaluated the lesions of 1,323 patients undergoing biopsies of 1,657 suspicious pigmented lesions. Based on their analysis, 804 or 48.5 percent of the lesions were larger than 6 millimeters in diameter and 138 or 8.3 percent were diagnosed as melanoma. Invasive melanoma, which has penetrated deeper into the skin and is most life threatening, was diagnosed in only 13 or 1.5 percent of 853 lesions that were 6 millimeters or smaller in diameter. By contrast, the invasive type was diagnosed in 41 or 5.1 percent of 804 lesions larger than 6 millimeters.

In situ melanomas, which are less dangerous because they remain in the skins outer layers, were diagnosed in 22 or 2.6 percent of 853 lesions 6 millimeters or smaller in diameter and in 62 or 7.7 percent of 804 lesions larger than 6 millimeters.


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Contact: Jennifer Berman
Jennifer.Berman@nyumc.org
212-404-3555
New York University Medical Center and School of Medicine
Source:Eurekalert

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