Unilateral choanal atresia. A possible indication for computer aided surgery? "A report of two cases"

Choanal atresia (CA) is a congenital obstruction of the posterior nose. Bil ateral CA is a paediatric emergency and must be treated surgically in the f irst few weeks after birth. This is in contrast to unilateral CA, because s urgical management can be planned more selectively. Transpalatinal surgery for CA is a safe procedure. The endonasal technique is minimally invasive and less traumatic; however, a major disadvantage is a limited field of vision. Computer aided surgery using images acquired by computer tomography (CT) or magnetic resonance imaging (MRT) is an applicat ion that has emerged in the last few years. This application provides an ad ditional safety factor for endoscopic surgery to resolve choanal atresia, e specially in cases of another malformation. We report results from two case s of unilateral CA who were surgically managed with Computer aided surgery.