[Nasolabial musculocutaneous island flap].

The authors describe a musculocutaneous island flap with a superior pedicle raised from the nasolabial sulcus and comprising the levator labii superioris and levator labii superioris alequae nasi. This flap was used in 23 cases to repair defects following resection of skin cancers of the lateral side of the nose, the upper lip and the cheek. The anatomical study of the blood supply of the nasolabial sulcus reveals the existence of a vascular junction within the muscle. The use of this muscle allows an increase in the dimensions, reliability and mobility of previously described flaps.