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nonmelanoma skin carcinoma in situ on the eyelid

(non-MEH-luh-NOH-muh skin KAR-sih-NOH-muh in SY-too ... I-lid)
Abnormal cells are found in the epidermis, usually in the basal cell layer. These abnormal cells may become cancer and spread into nearby normal tissue. Also called stage 0 nonmelanoma skin carcinoma in situ on the eyelid.
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