Perlman, M., and Reisner, S. H. (1973). Archives of Disease in Childhood, 48, 627. Asymmetric crying facies and congenital anomalies. The frequency of hypoplasia of the depressor anguli oris muscle in a newborn population was 41 in 6360 (1 in 155). No adverse factors were noted in the obstetric background of affected infants and the pathogenesis of the lesion is not clear. The incidence of associated congenital anomalies detected in the newborn period was 2 in 41 (4. 9%). The lesion was predominantly left-sided (83%) in this series, which contrasts with the side of the lesion in infants found in hospital populations (32%). Even allowing for the anticipated increase in incidence of other anomalies during follow-up, the prognosis appears to be more favourable than that indicated by studying series of infants ascertained by way of associated anomalies.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.