PMC3884940_01
Impetiginous crusted lesions on the upper limb
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F1
A 36-year-old male presented with progressive nodular, ulcerative and impetiginous lesions over trunk, upper extremities and thighs for 3 months [Figure 1].
Histopathology showing dermis with grenz zone and foam cells (H and E, x10)
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F2
Histopathological examination revealed a narrow grenz zone separating flattened epidermis above and dense inflammatory cells in dermis comprising of sheets of foam cells admixed with polymorphs, lymphocytes, and histiocytes [Figure 2].
Histopathology of lesional biopsy demonstrating foam cells and both intact and fragmented bacilli (Fite Faraco stain)
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F3
Fite stain showed numerous solid and fragmented acid fast bacilli discretely as well as in clusters [Figure 3].