[A case of upper gastrointestinal bleeding due to a ruptured gastric aneurysm caused by arteriosclerosis derived from primary aldosteronism-induced hypertension].

A 77-year-old woman with a history of hypertension underwent upper gastrointestinal endoscopy for hematemesis, and vasodilation with erosion was detected. Contrast-enhanced computed tomography and abdominal angiography revealed a gastric aneurysm penetrating the stomach wall. Endoscopic hemostasis was thought to be not applicable to a ruptured aneurysm. Transcatheter arterial embolization was not performed because of technical difficulties. Therefore, local gastric resection was performed. It was later determined that the cause of the persistent hypertension was primary aldosteronism, which was thought to cause arteriosclerotic obstruction of the celiac, common hepatic, and splenic arteries, resulting in the formation of the gastric arterial aneurysm. In the case of upper gastrointestinal bleeding, keeping primary aldosteronism in mind as a differential diagnosis is important to make a precise diagnosis and suitable treatment selection.