Flat wart

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]

Flat wart
Other names	Verruca plana
Verruca plana (flat warts) on the chin of a middle-aged woman
Specialty	Dermatology

Additional images

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  Micrograph of a flat wart
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  Woman with extensive flat warts on her face