Disseminated intravascular coagulation (DIC) constitutes a rare presentation form of aortic aneurysms. In majority of cases, DIC is asymptomatic and has chronic course, but in 0.5-4% of patients it is clinically overt. Very seldom DIC leads to diagnosis of previously unknown aortic aneurysm. The authors describe a case of 84 years old man referred to hospital due to haemorrhagic diathesis with laboratory results consistent with overt DIC. A CT scan demonstrated abdominal aortic aneurysm (AAA) as an underlying disorder. The patient was treated with fresh frozen plasma and enoxoparine. After reaching the clinical and laboratory improvement he was proposed with placing an endoluminal stent graft, but he did not agree for operation. The multidisciplinary management of this patient is presented and some issues concerning the epidemiology, treatment and coagulation assessment of AAA patients with DIC are discussed.