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Skin:
Typical histological appearance of a squamous papilloma.
Only the superficial epithelial layer is affected, where it is thrown
into multiple folds. The epithelial cells are well-differentiated and the
architecture is orderly.
The epithelium of the hair follicles is also thickened,
and is producing excessive rings of keratin, around a central hair (arrowheads).
Mitotic figures are rarely seen in the basal layers.
Occasional areas of individual cell death are present. (pyknotic nuclei
– arrows)
(x40)
Slide ref: Lab class 20, slide 4*
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