| Here is a squamous cell carcinoma of the upper eyelid. This mass lesion is a neoplasm arising from sun damaged squamous epithelium. It arises out of actinic keratosis proceeding to carcinoma in situ proceeding to invasive carcinoma. Removal presents the same problems as with a basal cell carcinoma. [Image contributed by Nick Mamalis, MD, University of Utah] |
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