Background

This is the first known case report of a mucocele that has developed as a result of retained gastric mucosa after prior partial remnant gastrectomy for gastric remnant leak. The patient is a 54-year-old female with history of roux-en-Y gastric bypass (RYGB) three years ago complicated by a persistent left upper quadrant collection causing left upper quadrant abdominal pain and early satiety. She underwent diagnostic laparoscopy eight months after RYGB, during which a leakage at the remnant stomach was identified and partial remnant gastrectomy was performed. Some debri was noted in the lesser sac at that time; biopsies of the debri revealed gastric cells on pathology. After this surgery, she then continued to have a persistent left upper quadrant collection over the following two years, at which point she presented to us for further management. The collection persisted despite ethanol ablation and decision was made to proceed with diagnostic laparoscopy. During the operation, the mucocele was identified after delineating her prior RYGB anatomy. The mucocele was fused to the gastric remnant, so it was excised with partial remnant gastrectomy. Post-operatively, she reports complete symptom resolution and freedom from any abdominal drains.