PMC4802524_01
Clinical photo shows erythematous patch with papules at the right side of the neck.
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fig1
Physical examination found 3 demarcated papules coalescing into plaques located on the right side of his neck, chest, and right upper arm (Fig 1).
A, Dermal infiltrates of histiocytes and lymphocytes. B, Multinucleated foreign body giant cells engulfing elastolytic fibers (arrows). C, Complete loss of elastin fibers in the dermis (upper left quadrant). Note the sharp demarcation of the infiltrated area in contrast to the surrounding dermis with preserved elastin content (C). (A, Hematoxylin-eosin [H&E] stain, original magnification: x10; B, H&E stain, original magnification: x40; C, Orcein staining, original magnification: x10.)
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There was no mucin or necrobiosis (Fig 2).