Flat wart | |
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Other names | Verruca plana |
Verruca plana (flat warts) on the chin of a middle-aged woman | |
Specialty | Dermatology |
Flat warts, technically known as Verruca plana, are reddish-brown or flesh-colored, slightly raised, flat-surfaced, well-demarcated papule of 2 to 5 mm in diameter. Upon close inspection, these lesions have a surface that is "finely verrucous". [1] [2] Most often, these lesions affect the hands, legs, or face, and a linear arrangement is not uncommon. [2] At histopathology, flat warts have cells with prominent perinuclear vacuolization around pyknotic, basophilic, centrally located nuclei that may be located in the granular layer. [3] These are referred to as "owl's eye cells." [3]
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