A Number 0 Tessier cleft is a true median cleft lip with a broad columella and bifid nasal tip. The alveolar cleft is between the central incisors. The nasal septum may be thickened, duplicated, or absent. The nasal bridge is usually broad with associated orbital hypertelorism. The midline soft tissue anomaly may range from a mild broadening of the philtrum or there may be a true median cleft lip. The columella and nasal tip are typically bifid and broadened with a midline depression. The alae nasi are intact but laterally displaced. The nose appears shortened in the vertical dimension. [from
HPO]