RT Journal Article SR Electronic T1 Metallic cutaneous contaminant mimicking malignant melanoma JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 177 OP 181 VO 50 IS 2 A1 James T. McMahon A1 Wilma F. Bergfeld YR 1983 UL http://www.ccjm.org/content/50/2/177.abstract AB A linear blue streak of the finger appearing as malignant melanoma is diagnosed with the analytical electron microscope as a cutaneous heavy metal contaminant having localized toxic effects ameliorated by the copresence of selenium.