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Midline upper lip sinuses alone are rare entitities, with less than 25 cases reported previously. Midline upper lip sinuses with associated cleft lip are even more rare. A patient report of median cleft lip with associated upper lip sinuses in a 16-year-old boy is presented. Controversy exists as to whether these abnormalities are related. This report demonstrates the plausibility of a cause-and-effect relationship between midline clefts and sinuses.
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Licht et al. (1998) studied this question.
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