I-Choanal atresia lukhubazeko ozalwa nalo olwenzeka phaya ngasemva komzila wempumlo (obizwa ngokuba yi-choana) kutsho kuvaleke mba lo mzila, oko ke kudla ngokwenzeka xa kuthe kwakho ithambo elingaqhelekanga mhlawubi eli thambo linobudalwa obuthile, okanye xa kuye kwakho i-tissue ethambileyo (enjengenwebu okanye into ebukhumbarha) ngenxa yokusilela kwe-recanalization yawo omabini amagumbi empulo (iimbobo zempulo esiphefumla ngazo) ngexesha lokukhula kwemveku isesesiswini sesilwanyana.