Clark level

Clark lev·'el

(klahrk), the level of invasion of primary malignant melanoma of the skin; limited to the epidermis, I; into the underlying papillary dermis, II; to the junction of the papillary and reticular dermis, III; into the reticular dermis, IV; into the subcutaneous fat, V. The prognosis is worse with each successive deeper level of invasion.

Clark lev·el

(klahrk lev'ĕl) The level of invasion of primary malignant melanoma of the skin; limited to the epidermis, I; into the underlying papillary dermis, II; to the junction of the papillary and reticular dermis, III; into the reticular dermis, IV; into the subcutaneous fat, V. The prognosis becomes worse with each successively deeper level of invasion.

Clark,

Wallace H., Jr., U.S. dermatopathologist, 1924-1997. Clark level - the level of invasion of primary malignant melanoma of the skin, recorded by Roman numerals I, II, III, IV, V.