Laparoscopic Gastric Jejunal Bypass for Pyloric Stenosis After Corrosive Gastritis in an Adult: A Case Report

Corrosive gastritis in adults is caused by the ingestion of corrosive substances and can present with various symptoms. In severe cases, it may result in resorptive gastritis leading to pyloric stenosis. While oral gastric mucoprotective agents and endoscopic balloon dilation are used to treat pyloric stenosis, surgery is required in many cases. We report a case of pyloric stenosis secondary to corrosive gastritis, successfully treated with laparoscopic gastric jejunal bypass. A 64-year-old Japanese female with schizophrenia attempted suicide by ingesting a caustic alkaline solution, resulting in corrosive gastritis and subsequent pyloric stenosis. In our patient, the stenosis measured approximately 4 cm in length and was further complicated by additional factors, rendering endoscopic treatment unsuitable. Therefore, we performed a laparoscopic gastric jejunal bypass. This case demonstrates that laparoscopic gastric jejunal bypass is a safe and effective option for pyloric stenosis secondary to corrosive gastritis. It may serve as a feasible and less invasive surgical option, especially for patients with psychiatric comorbidities or high operative risk.