Infected intra-abdominal hematoma post-laparoscopic one-anastomosis mini gastric bypass: case report and literature review.

Introduction: Laparoscopic one-anastomosis gastric bypass (OAGB) is a widely performed bariatric procedure with favorable outcomes; however, it carries a risk of postoperative complications. An infected intra-abdominal hematoma is a rare but potentially serious complication, often presenting with nonspecific features that can delay diagnosis. Case presentation: A 29-year-old female with class II obesity (BMI 36 kg/m Discussion: This case highlights the diagnostic challenge of postoperative infected hematoma, particularly in the absence of early abdominal signs. While postoperative bleeding after OAGB is uncommon, progression to an infected hematoma is rare. Imaging plays a crucial role in diagnosis, and minimally invasive approaches, such as percutaneous drainage, provide effective management with favorable outcomes. Conclusion: Infected intra-abdominal hematoma should be considered in patients presenting with unexplained sepsis following OAGB. Early imaging and timely intervention are essential for successful management and improved patient outcomes.