SECTION EDITOR: MARY S. STONE, MD; ASSISTANT SECTION EDITORS: SOON BAHRAMI, MD; CARRIE ANN R. CUSACK, MD; SENAIT W. DYSON, MD; MOLLY A. HINSHAW, MD; ARNI K. KRISTJANSSON, MD
Histopathologic examination of the biopsy specimen demonstrated a circumscribed, spindle and ovoid cell proliferation with dense laminated collagen bundles (Figure 2 [hematoxylin-eosin, original magnification ×4] and Figure 3 [hematoxylin-eosin, original magnification ×10). Spindle cells stained diffusely positive for epithelial membrane antigen and negative for collagen IV and muscle-specific actin.
Tender Papule on the Finger of a Child —Diagnosis. Arch Dermatol. 2011;147(8):975–908. doi:10.1001/archdermatol.2011.197-b
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