The Department of Defense is headed by a civilian; the Secretary of Defense, who is appointed by the President of the United States. Under the Secretary of Defense, there are three military departments: The Department of the Army, the Department of the Air Force, and the Department of the Navy. 1  Each of these military departments are also headed up by civilians; the Secretary of the Army, the Secretary of the Air Force, and the Secretary of the Navy.
Melanoma is not as common as other types of skin cancer, but it's the most serious and potentially deadly. Possible signs of melanoma include a change in the appearance of a mole or pigmented area.
Does it mean you need immediate treatment? Does it mean that you are okay and donât need to do anything? According to DermIS, a precancerous lesion is a change in some areas of your skin that carries the risk of turning into skin cancer. It is a preliminary stage of cancer. [1] Although not all precancerous lesions turn into cancer, many doctors treat these lesions proactively, removing the lesion before it has a chance to turn into cancer. Some of the most common types of precancerous lesions are: Acitinic Keratosis is the most common type of precancerous lesion. They usually appear in areas of the body that have been exposed to the sun. These lesions often appear as red or flesh colored scaly areas or could look similar to a wart.