Pouch diverticula after vertical-banded gastroplasty

Area of Science:

• Bariatric Surgery
• Gastroenterology
• Radiology

Background:

• Vertical-banded gastroplasty (VBG) is a bariatric surgical procedure for morbid obesity.
• Diverticula of the proximal gastric pouch are uncommon complications following VBG.

Purpose of the Study:

• To report the radiographic findings of proximal gastric pouch diverticula after VBG.
• To assess the clinical significance and natural history of these rare diverticula.

Main Methods:

• Retrospective review of radiographic findings in 12 patients with VBG-associated gastric pouch diverticula.
• Analysis of lesion size, location, and patient symptoms.
• Follow-up imaging in 7 patients to assess diverticula enlargement over time.

Main Results:

• Diverticula, ranging from 10-25 mm, were located on the posteromedial wall of the gastric pouch.
• Only two patients were symptomatic; most diverticula were incidental findings during follow-up.
• No correlation was found between diverticula presence and symptoms, weight loss, or long-term complications.
• Slight enlargement was observed in 4/7 followed cases over 14-53 months.

Conclusions:

• Gastric pouch diverticula after VBG are considered clinically unimportant.
• Routine follow-up for these asymptomatic lesions is not recommended.
• Diagnostic evaluation is indicated only if patients develop symptoms.