Abstract
Cleft lip and cleft alveolus are caused by incomplete fusion of the frontonasal and maxillary prominences. However, milder forms of cleft lip are rarely accompanied by cleft alveolus. Here, we report a rare case of mini‐microform cleft lip with complete cleft alveolus and cleft palate. No findings suggestive of cleft lip were evident on initial examination. However, three‐dimensional facial measurements confirmed the presence of cleft lip despite no evidence of orbicularis oris muscle (OOM) rupture on ultrasonography. Collapsed nostril, as observed in this case, is usually associated with OOM rupture. However, it can also be caused by skeletal abnormalities, such as cleft alveolus. Three‐dimensional facial measurements and ultrasonography can assist in accurate diagnosis when visual examination is ambiguous.
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