Congenital choanal atresia where the atretic wall thickened while waiting for an elective surgery

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Abstract
Introduction and importance: Although bilateral congenital choanal atresia (CCA) requires early intervention to open closure walls for safe breathing, it is desirable to be withheld until an infant acquires surgical and anesthetic tolerance. Here we introduce an infant of CCA whose closure wall had thickened during a waiting period for an elective surgery. Case presentation: The choana of the patient could not be identified by intranasal fiberscopy and the bilateral CCA was found by CT scan on day 17 after birth. Since he could breathe orally without distress, surgery was withheld until he acquires the tolerance. At nine weeks old, however, CT image detected thickening of the closure wall. At 10 weeks old, he underwent scheduled surgery in which the bilateral closure walls were removed together with attached posterior part of the nasal septum under endoscopic endonasal approach. The patient became able to breath nasally and the choana remained open without restenosis at 3 years after surgery. Clinical discussion: This is the first CCA case reporting closure walls thickened during a waiting period for an elective surgery. Although waiting for surgery was systemically safer by growth, the surgery became more invasive to prevention from restenosis. Conclusions: This case suggests that we must decide appropriate timing of surgery in an infant, considering dilemma between systemic safety ensuring and lesion aggravation by waiting for surgery. Highlights:

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