skin carcinoma in situ (MONDO_0004641) is a in situ carcinoma that involves the zone of skin. Also known as: carcinoma in situ of skin, carcinoma in situ of the skin, carcinoma in situ of zone of skin, carcinoma of skin stage 0, carcinoma of the skin stage 0, cutaneous carcinoma in situ, nonmelanoma carcinoma in situ, skin cancer stage 0.