PMC8504708_01
Clinical manifestation and histopathological findings of porokeratosis ptychotropica. (A) Clinical manifestation shows "Butterfly shaped" verrucous plaque over buttocks with multiple satellite papules. (B) Histopathological findings shows characteristic multiple cornoid lamellae. Dyskeratotic cells and focal hypogranulosis were present in the epidermis underlying the column of parakeratosis (H&E staining, x200).
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On examination, well-demarcated brown plaques with a verrucous white surface and multiple satellite papules along the gluteal folds and buttocks sparing the anus were noted (Figure 1A). Dyskeratotic cells and focal hypogranulosis were present in the epidermis underlying the column of parakeratosis (Figure 1B).