This is the endoscopic view after opening the atresia plate and enlarging the choana. Courtesy of Professor Heinz Stammberger, University of Graz, Austria.
Choanal atresia in a neonate The atresia plate on the left side has just been perforated [a 2.7 mm 0° telescope was used]. Courtesy of Professor Heinz Stammberger, University of Graz, Austria.
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