A series of 322 endonasal endoscopic interventions in 200 patients was reviewed. The patients were divided into two groups: I - consisting of the patients undergoing surgery without preoperative CT of paranasal sinuses; II - where CT was available and was performed before surgery. In both groups no major complications occurred, and the incidence of minor complications was similar. Adherence to anatomical landmarks was of paramount importance and reduced the incidence of complications in both groups. Experience in endonasal surgery, control of bleeding by meticulous technique, local anesthesia, and proper patient selection allowed the surgeon to avoid injury during FESS.
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