Iatrogenic vascular injuries are unusual complications

of lumbar disc surgery. Their incidence is very low but because clinical manifestations may be extremely variable depending on the extension of trauma, is probably underestimated (1-4). Vascular injury is suspected when early signs of retroperitoneal hemorrhage appear, but may often be delayed for weeks or years due to the formation of a pseudoaneurysm or arteriovenous fistula, which may be of gradual onset and give rise to few initial symptoms. Prompt diagnosis and aggressive treatment can improve the current mortality rate of more than 50% (1-3). We describe one case of acute hemorrhage and aortic pseudoaneurysm caused by lumbar disc surgery in a young man.