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A 78-year-old lady with a history of arterial hypertension and left upper lobectomy 4 months previously for stage IIB lung adenocarcinoma was admitted to our bleeding unit with severe anemia (hemoglobin level on admission 6.7g/dL) and recent onset of melena. No hemodynamic instability was observed and, after a blood transfusion had been given, urgent esophagogastroduodenoscopy was performed with the patient under monitored anesthesia care. The retroflexion maneuver revealed an extrinsic pulsating bulging mass, partially covered by adherent large blood clots, originating from the fundus and extending to the posterior wall of the proximal body of the stomach. No active bleeding was noted (▶Fig. 1; ▶Video 1). Emergent computed tomography angiography revealed a ruptured thoracoabdominal aortic aneurysm (TAAA) within a 7×6-cm periaortic hematoma that was compressing the gastric wall. No contrast extravasation into the stomach was noted; however, the tissue planes between the aorta and the stomach appeared obliterated (▶Fig. 2). The TAAA involved the proximal part of the celiac artery and was located around 12mm above the origin of the superior mesenteric artery (SMA) (▶Fig. 3). The patient was immediately transferred to the surgical theatre. After prompt multidisciplinary evaluation, endovascular stent grafting was successfully performed just above the SMA ostium. A subsequent gastric surgical repair was planned after clinical stabilization had been achieved. Unfortunately, the patient succumbed on postoperative day 2 frommultiorgan failure. Primary aortoenteric fistulas are communications between the native aorta and any part of the gastrointestinal (GI) tract, with a reported incidence of 0.07% [1]. A primary aortogastric fistula (PAGF) is an extraordinary location for this [1], with an extremely high mortality [2]. To date, endoscopic images of PAGFs have only been provided in three case reports [3– 5]. This is the first video to show with exE-Videos

Primary aortogastric fistula: an extraordinary rare endoscopic finding in the setting of upper gastrointestinal bleeding