A precancerous condition of thick, scaly patches of skin. Also called solar or senile keratosis.
Local anesthetics cause loss of feeling in a part of the body.
General anesthetics put the person to sleep. Small, round cells found in the lower part, or base, of the epidermis, the outer layer of the skin. Also used to lessen side effects that may be caused by some cancer treatments. The removal of cells or tissues for examination under a microscope. When only a sample of tissue is removed, the procedure is called an incisional biopsy or core biopsy.