[2 CASES OF CHOANAL ATRESIA].
D000293:Adolescent; D002754:Choanal Atresia; D000013:Congenital Abnormalities; D005147:Facial Bones; D006311:Hearing Disorders; D006801:Humans; D009666:Nose
ABNORMALITIES; ADOLESCENCE; FACIAL BONES; HEARING DISORDERS; NOSE
DVA P R'IPADY CHOAN'ALN'ICH ATR'EZI'I.