Suspected Brucella-associated descending thoracic aortic pseudoaneurysm presenting as upper gastrointestinal bleeding: A case report and review of literature

Figure 1 Upper endoscopic findings. A: A large smooth submucosal protrusion was observed on the posterior esophageal wall, 26-32 cm from the incisors, causing partial narrowing of the esophageal lumen; B: Apical ulceration of the protruding lesion with an adherent dark-red clot; C: Close-up view of the ulcerated surface and adherent clot, suggesting the recent bleeding site; D: Endoscopic view of the gastric body showing no evidence of active intragastric bleeding.