Conclusion
This is a rare case of retroperitoneal perforation of a duodenal
diverticulum due to a bezoar impaction. Endoscopic treatment was
successful and surgery was avoided. The endoscopic approach is minimally
invasive and offers significant advantages when perforation is limited
to a retroperitoneal abscess. Endoscopic drainage and lithotripsy should
be considered for DDP caused by bezoars.