RESUMO
INTRODUCTION: Among the many techniques available for bariatric surgery, the Mini Gastric Bypass is a safe, technically simple and effective option. However, it may present with postoperative complications, being the perforated gastric ulcer one of the most relevant ones. PRESENTATION OF CASE: A female patient of 41 years of age, with past medical history of a laparoscopic MGB performed 2 year before, presented with 12 hours of sharp and abruptly initiated abdominal pain, with diffuse presentation with suspected perforated acute abdomen after initial medical assessment and examination. Imaging propaedeutic was performed and confirmed a small pneumoperitoneum the patient was submitted to a laparoscopy with closure of the leak and omental patch (Graham's patch) after a thorough abdominal irrigation with saline solution. The patient was discharged from the hospital on the fourth day after surgery. DISCUSSION: One of the most common complications after and MGB surgery is the occurrence of gastric ulcers and main manifestation of the anastomotic marginal ulcers (MU) is the perforation. The treatment of the perforated peptic ulcer can be performed via laparoscopic or laparotomic approach. The main objective, regardless of the method used to access the abdominal cavity, is to identify and close the perforation. CONCLUSION: The perforated gastric ulcer is a complication of the mini bariatric bypasses, and the laparoscopic treatment of the perforation associated with thorough irrigation for of the abdominal cavity and omentoplasty present good results for management of this complication.