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Although screening for melanoma/skin cancer is theoretically of value, few data are available to evaluate its effectiveness or the value of a visual exam by a dermatologist as a cancer screening tool. From the 2560 persons screened for melanoma/skin cancer in Massachusetts in 1986 and 1987, the authors followed the positive screenees to determine their final diagnosis. The authors obtained information on 85% of these persons, and found nine malignant melanomas, 91 non-melanoma skin cancers, 39 dysplastic nevi, and three congenital nevi. The sensitivity of the visual exam by a dermatologist was 89% to 97% and the predictive value positive was 35% to 75% for skin cancer. The authors conclude that the yield of screening is equivalent to that of other major cancer screening efforts and that the sensitivity and predictive value of the visual examination by the dermatologist is appropriate for a cancer screening tool.
Koh et al. (Mon,) studied this question.