Actinic keratosis
Histology: Defined as dysplasia limited to the basallayer of the epidermis, often associated with hyperparakeratosis.Frequency:
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Bowens disease
Histology: Defined as dysplasia of the all the layers of the epidermis (aka. full thickness dysplasia) without invasion of the dermis.Frequency:
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Squamous cell carcinoma
Histology: Defined as dysplasia of all the layers of the epidermis WITH invasion of the dermis.Frequency:
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Basocellular carcinoma
Histology:Frequency:
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