Fig. 2
From: A case of neonatal sweet syndrome associated with mevalonate kinase deficiency
Skin biopsy showing A) pityriasiform dermatitis with mild hyperkeratosis, mild spongiosis, focal exocytosis with perivascular and diffuse superficial to mid dermal mixed inflammatory infiltrate with rare eosinophils, and papillary dermal edema (hematoxylin and eosin stain, x20) B) CD163 stain highlighting a majority of histiocytic cells in the dermal infiltrate (CD163 stain, x20)