“…Spatial overlap of the SLN and ON was observed in 33% (10/30) of the cases. 2,6,9,12,18,20,21,22 Melanocytic nevi of various types have been noted to develop within the SLNs of patients with PPK, including blue, 2,18,22,23 Spitz, 9,12,16,20 and dysplastic nevi 15 as well as banal junctional, compound, and dermal nevi. Several patients (including ours) were noted to have larger, hypertrichotic plaques with clinical and histologic features of a ''classic'' congenital melanocytic nevus (CMN) within their SLNs, 11,17,18,22 supporting the hypothesis that SLNs represent a subtype of CMN.…”