MedGen

A gap or groove in the upper lip. This is a congenital defect resulting from nonfusion of tissues of the lip during embryonal development. [from HPO]

A gap in the lip or lips. [from HPO]

Cleft palate is a developmental defect of the palate resulting from a failure of fusion of the palatine processes and manifesting as a separation of the roof of the mouth (soft and hard palate). [from HPO]

Congenital 'healed' cleft lip (CHCL) is an unusual anomaly consisting of a paramedian 'scar' of the upper lip with an appearance suggesting that a typical cleft lip was corrected in utero. The CHCL is frequently associated with an ipsilateral notch in the vermilion border and a 'collapsed' nostril (Castilla and Martinez-Frias, 1995). For a phenotypic description and a discussion of genetic heterogeneity of nonsyndromic cleft lip with or without cleft palate, see OFC1 (119530). [from OMIM]

Cleft palate as an isolated malformation behaves as an entity distinct from cleft lip with or without cleft palate (see 119530). Dominantly inherited cleft soft palate in 4 generations has been reported (Jenkins and Stady, 1980); see 119570. [from OMIM]

Any cleft lip/palate in which the cause of the disease is a mutation in the DLX4 gene. [from MONDO]