Dieulafoy lesion with rare vascular complications: diagnostic and therapeutic approach.

Dieulafoy lesions are a rare cause of gastrointestinal bleeding, characterized by an enlarged submucosal blood vessel that bleeds without visible abnormalities. The diagnosis is typically made via endoscopy, and treatment usually involves endoscopic therapy. This case involves a 46-year-old female who presented with upper gastrointestinal bleeding due to a Dieulafoy's lesion, treated with band ligation and later embolization after the lesion was found to originate from the left phrenic artery. The patient developed rare complications, including splenic infarction and pleural effusion, which required additional management. Upon initial investigations, the patients had an accidental finding on computed tomography of asymptomatic celiac artery compression that was advised to take into consideration for the possibility of developing median arcuate ligament syndrome and was treated conservatively. The case highlights the diagnostic and therapeutic challenges of Dieulafoy's lesion and underscores the need for individualized treatment and further research.