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| Clinically,
these lesions may appear as irregularly thickened or elevated skin which
may have a brown or reddish discoloration with thickening of the
epithelium. Histologically,
the epithelium may show signs of acanthosis and hyperkeratosis (#21844). In addition, cellular atypia of the innermost layers of the
squamous epithelium is common; however, normal polarity and maturation are
preserved. The superficial
dermal tissue shows a characteristic basophilic degeneration of collagen
(#21846).
|
| High
Power #21846 |
Med
Power #21844 |
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