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Endoluminal treatment for Zenker's diverticulum - a population-based observational study
Eirik Østensen Søfteland1, Anne Kristin Aasebøstøl2, Gjermund Johnsen1,3
1Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.
Background:
Zenker's diverticulum is a false diverticulum arising in the oesophago-pharyngeal junction. It may cause symptoms like dysphagia and regurgitation. In Central Norway, treatment is centralized to St. Olavs hospital, either as an endoscopic stapled oesophago-diverticulostomy procedure at the Department of Gastrointestinal Surgery or as laser diverticulostomy at the Department of Ear, Nose and Throat Surgery, depending on diverticulum size.
Methods:
Retrospective, population-based, study from 2001-2020 on patients treated for Zenker's diverticulum, at the time with a rigid endoscopic approach. Patients were identified through the in-hospital register for operations. The two treatment groups were compared on relevant pre-, intra-, and postoperative variables by review of the individual patient records.
Results:
78 consecutive patients, 36 at Dept. of Ear, Nose and Throat Surgery and 42 at Dept. of Gastrointestinal Surgery, were treated with a total of 104 interventions. Crude incidence for a surgery-demanding Zenker's diverticulum was 0.57 per 100 000 per year. The Dept. of Ear, Nose and Throat Surgery administered significantly less often prophylactic antibiotics than the Dept. of Gastrointestinal Surgery (p < 0.001), administered more frequently intraoperative dexamethasone (p < 0.001), and had significantly more postoperative infections (19.6% vs 3.4%, p = 0.01). No procedure-related mortality was registered. Although no standardized follow-up took place, at a median of 119 months elapsed, observed clinical recurrence was 35% for the endostapler treatment and 51% for the laser treatment procedure.
Conclusion:
Both rigid endoscopic stapled oesophago-diverticulostomy and laser diverticulostomy are safe treatments for Zenker's diverticulum, however with a substantial risk of recurrence.
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