NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,328 terms related to cancer and medicine.
We offer a widget that you can add to your website to let users look up cancer-related terms. Get NCI’s Dictionary of Cancer Terms Widget.
- actinic keratosis
- listen (ak-TIH-nik KAYR-uh-TOH-sis)
- A thick, scaly patch of skin that may become cancer. It usually forms on areas exposed to the sun, such as the face, scalp, back of the hands, or chest. It is most common in people with fair skin. Also called senile keratosis and solar keratosis.