[A preliminary study of a modified transnasal endoscopic three step vidian neurectomy].

Objective: The aim of this study is to explore an improved trans-nasal endoscopic surgical approach for vidian neurectomy. Method: Ninety-one patients with nasal hyperreactive disease were collected, including 49 cases of allergic rhinitis and 42 cases of non allergic rhinitis. All sufferers enrolled in the study have treated with medicine, but the symptoms were not effectively controlled. Preoperative CT localization of the vidian canal was performed in each candidate. During the surgery a"Three-step" surgical approach were followed under endoscopic guidance in accordance with the operation procedures. Briefly, such a three-step procedure consists of the following, that is, a transnasal endoscopic sphenoidectomy through sphenoethmoidal recess as step one, with enlargement of the sinus ostium along the junction of the anterior wall and the floor of the sinus until the exposure of the vidian nerve canal toward the lateral wall of the sinus as step two. The last step was further exposure of the vidian nerve going through the canal and electric cautery preventing bleeding from the neurovascular bundle in the canal. Result: All patients were completed successfully with 100% preoperative CT location of the vidian canal in the CT scan and 100% intraoperative accurate exposure of the canal and therefore the cut of the vidian nerve. Conclusion: "Three-step" endoscopic resection of the vidian neurectomy is easy to master and repetitive with less injury.