title: Choanal atresia-a cryptic congenital anomaly.
mesh_terms: D000015:Abnormalities, Multiple; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D009305:Nasopharynx / Q000002:abnormalities* / Q000196:embryology / Q000473:pathology