Characteristics of patients with cerebral aneurysms and arteriovenous malformations

Introduction and aim. Aneurysms and arteriovenous malformations (AVMs) are both vascular abnormalities that can occur simultaneously or separately and increase the risk of intracerebral hemorrhage. The aim of this research was to characterize patients with intracranial aneurysms and AVMs. Material and methods. This retrospective research was based on analysis of Digital Subtraction Angiography. The research group consisted of 118 patients. StatSoft STATISTICA 13 was used for the statistical analysis of parameters, such as dimensions and vascularization pattern of vascular abnormalities. Results. The total number of aneurysms described was 168. In addition, 33 patients with cerebral aneurysms were also diagnosed with cerebral AVMs. The average dimensions of the aneurysms were 6.33mm, 95% CI (5.47 7.18) × 4.76mm, 95% CI (4.09, 5.43). The abnormalities were found in the extent of circulation of ACA (anterior cerebral artery) 50 (29.76%), ICA (internal carotid artery) 48 (28.57%), MCA (middle cerebral artery) 26 (15.48%), PCA (posterior cerebral artery) 23 (13.69%). There were 76 (64%) patients with diagnosed single aneurysms and 42 (36%) with multiple. Conclusion. Aneurysms are more likely to occur singly than multiply. The majority are located within the vascularization of the ACA. Aneurysms can coexist with AVMs, which increases the risk of rupture.