Definition: Congenital defect in the upper lip where the maxillary prominence fails to merge with the merged medial nasal prominences. It is thought to be caused by faulty migration of the mesoderm in the head region.
do not use /congen & do not coord with INFANT, NEWBORN, DISEASES; when with CLEFT PALATE, do not also use ABNORMALITIES, MULTIPLE
Other names Harelip; Lips, Cleft; Lip, Cleft; Harelips; Cleft Lips