[Five cases of choanal imperforation].
D000013:Congenital Abnormalities; D006801:Humans; D009296:Nasal Cavity / Q000002:abnormalities*; D009305:Nasopharynx; D010256:Paranasal Sinuses
ABNORMALITIES; NASAL CAVITY/abnormalities
A propos de cinq cas d'imperforation choanale.