(a) All represent copy number increases of chromosome 11p; (b) all twelve represent copy number increases of chromosome 11p, eight of which contain mutations; (c) scalpel used for microdissection of melanocytes from fixed tissue; (d) did not utilize microdissection techniques to isolate melanocytes; (e) laser capture used for microdissection of melanocytes from fixed tissue; (f) two of the six HRAS mutations occurred in atypical nevi; (g) five of the ten BRAF mutations occurred in atypical inflammatory lesions that likely represented dysplastic nevi; (h) one of the two occurred in an atypical nevus; and (i) one of the two occurred in an atypical nevus with both BRAF and NRAS mutations.