Keratosis seborrhoeic (plaque type): flat, regularly bordered, little pigmented, non-irritant plaque.
Keratosis seborrhoeic: Multiple papillomatous and plaquelike seborrhoeic keratoses.
Keratosis seborrheic (plaque type): Flat irregularly bordered pigmented plaque.
Keratosis seborrhoeic (plaque-type) reflected-light microscopy: Horny inclusions marked by vertical arrows; the horizontal arrow indicates a vasectasia.
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