Transnasal surgical treatment of congenital @entity16453 is difficult. A limited view to the surgical field often accounts for poor results. An occurrence of a restenosis is frequently observed requiring difficult revision surgery. Severe complications include @entity548 , skull base and @entity1504 as well as orbital injuries. We describe the use of an optical computed tomography data-based navigation system for surgical planning and intraoperative guidance to improve treatment outcome. Computer-assisted planning and computed tomography data-based navigation was used in the case of a 2-year-old @entity1 with a history of @entity8222 associated with bilateral @entity16453 . To reduce target registration error, registration markers were fixed to a maxillary dental splint that was inserted intraorally during image data acquisition and @entity1 registration. A combined technique using navigational guidance and nasal and retropalatal endoscopy was used for instrument navigation successfully removing the bony atretic plates. This clinical report demonstrates the feasibility of a combined approach with surgical navigation. A larger clinical series with long-term follow up will be needed to determine the reproducibility and validation of potential benefits.

Computer-aided surgical treatment of bilateral XXXX .

@entity1 :: ('9606', 'Species') :: ['patient', 'infant'] @entity548 :: ('MESH:D006470', 'Disease') :: ['bleeding'] @entity1504 :: ('MESH:D002561', 'Disease') :: ['intracranial injuries'] @entity8222 :: ('MESH:D008342', 'Disease') :: ['Treacher Collins syndrome'] @entity16453 :: ('MESH:D002754', 'Disease') :: ['choanal atresia']
@entity16453 :: (MESH:D002754,Disease) :: ['choanal atresia']
