NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,804 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

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 (topmost layer of the skin). These abnormal cells may become cancer and spread into nearby normal tissue. Also called stage 0 nonmelanoma skin carcinoma in situ on the eyelid.