MARY S.STONEMDSOONBAHRAMIMDCARRIE ANN R.CUSACKMDSENAIT W.DYSONMDMOLLY A.HINSHAWMDARNI K.KRISTJANSSONMD
A 10-year-old boy presented with a “bump” on the anterior inferior portion of his left thigh of approximately 6 months' duration. The patient denied any trauma to the area, and findings from the remainder of the medical history and review of systems were unremarkable. On physical examination there was a nontender, tan-pigmented,0.9-cm papule (Figure 1). A biopsy specimen of the papule was taken (Figure 2). Immunohistochemical staining for S-100 protein was also performed (Figure 3).
Kelly N, Harvell JD, Milgraum S. Tan-Pigmented Papule in a Healthy Adolescent Male—Quiz Case. Arch Dermatol. 2011;147(5):609-614. doi:10.1001/archdermatol.2011.87-a