Case Presentation: A 19-year-old man with past medical history of recently incompletely treated H. pylori presented to the ED with severe abdominal pain, nausea, and vomiting for 20 days. Vital signs were normal, and physical exam was unremarkable. CT abdomen/pelvis showed diffuse gastric wall thickening with mucosal enhancement and mesenteric, gastrohepatic ligament, and para-aortic adenopathy. [...]