Abstract
Mallory-Weiss syndrome is characterized by lacerations of the gastro-esophageal junction caused by high intraabdominal pressure. We report a 6-year-old boy who had Mallory-Weiss tear accompanied by acute gastroenteritis with frequent vomiting. He was admitted to our hospital because of hematemesis after frequent vomiting. Upper gastrointestinal endoscopy was performed on diagnosis of upper gastrointestinal bleeding. The endoscopy revealed no lesions in the stomach and duodenum, although two lacerations in the lower esophageal mucosa close to the gastroesophageal junction were noted. After the endoscopy, he developed a fever with large-quantity diarrhea, acute gastroenteritis was therefore suspected as a cause of the vomiting. He received conservative treatment, and was discharged 4 days after admission.