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Clinical, Epidemiologic, Histopathologic and Molecular Features of an Unexplained Dermopathy

Figure 6

Superficial infectious processes identified in impetiginous skin lesions of case patients.

A. Superficial and deep perivascular dermatitis with epidermal hyperplasia and prominent scale-crust. A heavy growth of Stenotrophomonas maltophilia was obtained in culture of this site. B. Ulcerated skin with purulent exudates and serum-crust containing numerous colonies of coccoid bacteria (C) that stain intensely by using an immunohistochemical technique for Streptococcus pyogenes D and E. Purulent serum-crust from an impetiginous lesion, with abundant colonies of gram-positive coccoid bacteria (F). A heavy growth of Staphylococcus aureus was obtained in culture of this site. Hematoxylin and eosin stain (A, B, C, F), immunoalkaline phosphatase with naphthol fast-red and hematoxylin counterstain (D), and Lillie-Twort stain (F). Original magnifications ×12.5 (A), ×25 (B), ×50 (C), ×100 (D, E), and ×158 (F).

Figure 6

doi: https://doi.org/10.1371/journal.pone.0029908.g006