Discordancy Between Clinical Predictions vs Lymphoscintigraphic and Intraoperative Mapping of Sentinel Lymph Node Drainage of Primary Melanoma

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Abstract
PRIMARY CUTANEOUS malignant melanoma has evolved from a cancer of relative infrequency to achieve almost epidemic proportions. The lifetime risk for the development of melanoma in Americans has progressively increased from 1 in 1500 in 1935 to 1 in 150 in 1985, and is estimated to reach 1 in 70 by the year 2000.1 It is estimated that about 40 000 new cases will be diagnosed this year, and about 7300 patients will die of their disease.2