Here, we report a case of PNH with gastroduodenal lesions likely caused
by transient mucosal ischemia due to thrombosis. When patients with PNH
present with abdominal symptoms, thrombosis-induced gastrointestinal
injury should be considered. Recognition of gastric patchy redness on
esophagogastroduodenoscopy may help make the diagnosis of this
potentially serious complication.