Introduction: Esophageal dilation (ED) has been described as a long-term complication following laparoscopic adjustable gastric banding (LAGB) with an incidence of 0.5-50%. The purpose of this study was to evaluate the effect of major ED on weight loss and find methods to diagnose ED and possible treatment strategies based on a classification.
Materials and methods: We performed a retrospective analysis of all patients undergoing LAGB between 2004 and 2008 in three community-based hospitals. ED was classified in four stages of dilation using gastrografin swallow. We report body mass index (BMI), failure rates and reoperations among these patients, with a mean follow-up period of 6.7 years.
Results: Nineteen (18.4%) of 103 patients who underwent LAGB presented with esophageal dilation. Band deflation failed for all nine patients (8.7%) with major ED. The mean BMI at LAGB (BMI 1), revision (BMI 2), and 1 year after conversion (BMI 3) were 45.9±3.2, 42.8±4.9 and 30.3±5.5 kg/m2, respectively. No significant difference was found comparing BMI 1 and BMI 2 (p=0,065, EWL1: 14.2±21.7 kg/m2). In contrast, the weight loss after the revision surgery was significant (p=0.001, EWL2: 67.1±30 kg/m2). No significant difference was found concerning age, gender, ASA, preoperative (LAGB) weight, and mean interval between LAGB and revision comparing patients with major ED (IV) to patients with milder forms (ED I-III).
Conclusion: ED is a serious long-term complication after LAGB and seems to prevent effective weight loss in stage IV. Furthermore, untreated dilation could cause long-term damage to the esophagus. Therefore, we suggest routine radiographic follow-up after LAGB even in asymptomatic patients and a treatment based on a classification with an early surgical revision for major ED.