Gallbladder varices in a pediatric patient after roux-en-Y gastric bypass

This case report documents a rare complication in a pediatric patient who developed portomesenteric and splenic vein thrombosis following Roux-en-Y gastric bypass, leading to portal cavernoma and gallbladder varices. The case emphasizes the critical need for prophylactic anticoagulation protocols and comprehensive imaging surveillance in pediatric bariatric surgery patients.