Illustrations copyright 2000 by Nucleus
Communications, Inc. All rights reserved.
Cleft lip is a birth defect that occurs when the tissues of the upper
jaw and nose do not join as expected during fetal development, resulting in a
split (cleft) in the lip. An incomplete cleft lip can range from a slight
indentation to a notch in the upper lip on one side only. A complete cleft lip
is a deep split in the lip that extends into one or both sides of the nose.
This birth defect can be corrected with one or more surgeries.
Primary Medical Reviewer
John Pope, MD - Pediatrics
Specialist Medical Reviewer
Adam David Schaffner, MD, FACS - Plastic Surgery, Otolaryngology
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