Which type of congenital deformity is more common in males compared to females?

Cleft lip is known to occur more frequently in males than in females and has a specific sex ratio that reflects this difference. This malformation can occur as an isolated defect or as part of a syndrome and typically develops early in pregnancy. The reason for this male predominance is not fully understood, but it is believed that genetic and environmental factors may contribute to the differential susceptibility.

Cleft palate can occur in both sexes but does not exhibit the same level of sex-related prevalence; it tends to occur more equally among genders. Bifid uvula is also relatively common and does not show a marked gender bias, while the term "facial cleft" can encompass various types of clefts and doesn't specify a typical male-to-female occurrence. This distinction in prevalence underscores the importance of recognizing congenital malformations and their varied impact based on sex, which in the case of cleft lip, shows a clear trend favoring occurrence in males.