Hepatic portal vein gas (HPVG) is caused by the influx of gastrointestinal gas into the intrahepatic portal vein as a result of gastrointestinal wall fragility due to ischemia or necrosis. Gastrointestinal tract necrosis is fatal in severe cases. We observed a case of food intake-induced acute gastric dilatation (AGD) in a healthy young male who developed HPVG and underwent conservative treatment. A 25-year-old male presented to our hospital with epigastric pain and nausea the day after excessive food intake. Computed tomography (CT) revealed gas along the intrahepatic portal vein and marked gastric dilatation with large food residue. AGD-induced HPVG was considered. Esophagogastroduodenoscopy (EGD) was not performed at this stage because of the risk of HPVG and AGD exacerbation, and the patient was followed up with intragastric decompression via a nasogastric tube. Food residue and approximately 2 L of liquid without blood were vomited 1 h after the nasogastric tube placement. His symptoms improved after the vomiting episode. An EGD was performed 2 days after undergoing CT. Endoscopic findings revealed extensive erosions and the presence of a whitish coat extending from the fornix to the lower body of the stomach, indicating AGD. HPVG disappeared on the CT scan taken during EGD. Thereafter, symptom relapse and HPVG recurrence were not observed.
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