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  • Title: Endoscopic flexible treatment of Zenker's diverticulum: a modification of the needle-knife technique.
    Author: Repici A, Pagano N, Romeo F, Danese S, Arosio M, Rando G, Strangio G, Carlino A, Malesci A.
    Journal: Endoscopy; 2010 Jul; 42(7):532-5. PubMed ID: 20593330.
    Abstract:
    BACKGROUND AND STUDY AIM: Endoscopic treatment of Zenker's diverticulum has been successfully reported over the last 10 years using different approaches. The hook-knife is a new device originally developed for endoscopic submucosal dissection procedures. This study aimed to investigate the safety and efficacy of endoscopic myotomy performed with the hook-knife. PATIENTS AND METHOD: From July 2005, 32 consecutive patients (23-male, mean age 74.8 years) with dysphagia secondary to the presence of Zenker's diverticulum were prospectively enrolled. Myotomy was performed using a straight-end transparent hood to the tip of the scope and the hook-knife for the incision of the bridge between the Zenker's diverticulum and the esophagus. Clinical outcome was evaluated assigning a dysphagia symptom score from 0 (symptoms absent) to 4 (inability to swallow saliva). RESULTS: General anesthesia was used in 4 patients, deep sedation with propofol in 23 patients, while midazolam was used in 5 patients. The mean procedural time was 28 minutes. Complications occurred in 2 patients (6.25 %). At 1 month follow-up, the mean dysphagia score was significantly improved from 2.9 to 0.6 ( P < 0.001) with 87.5 % of patients free of symptoms and 4 patients with dysphagia that was persistent but milder than before the treatment. Three of these 4 patients underwent a successful second endoscopic treatment with complete relief of dysphagia; one was not re-treated because of advanced age (92 years). During the follow-up period (23.87 +/- 9.6 months), 2 patients developed dysphagia recurrence. The overall success rate was 90.6 %. CONCLUSIONS: Diverticulectomy with a flexible scope and the hook-knife may represent a safe and effective alternative treatment for patients with Zenker's diverticulum.
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