A 34-year-old Japanese pregnant woman presented with epigastralgia and nausea after meals. She was in her 7th week of pregnancy. She suffered from the same symptoms 5 years ago. Computed tomography (CT) performed then showed gastric dilatation and her symptoms improved only after placement of a nasogastric tube. Similarly, a nasogastric tube was inserted and approximately 300 ml of discharge was collected; however, her epigastralgia did not improve. Ultrasonography (US) showed an extremely dilated alimentary tract. We did not perform CT because she was in her first trimester; however, we performed MRI.
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