CORRELATION OF THE ANGIOARCHITECTURAL FEATURES OF CEREBRAL ARTERIOVENOUS-MALFORMATIONS WITH CLINICAL PRESENTATION OF HEMORRHAGE

SUPERSELECTIVE ANGIOGRAPHY IS the most accurate technique in the analy sis of brain arteriovenous malformation (AVM) angioarchitecture. There fore, we reviewed the selective and superselective angiograms of 100 c onsecutive patients with intracerebral AVMs. Our purpose was to determ ine which parameters of angioarchitecture were significantly correlate d with a clinical presentation of hemorrhage. The vascular characteris tics evaluated on the angiograms were the size of the AVM, the locatio n of the AVM, the type of nidus, the type of feeders, the characterist ics of venous drainage, and the number and location of aneurysms. The parameters found to correlate with hemorrhage were deep venous drainag e (P = 0.01), feeding by perforators (P = 0.01), intranidal aneurysm(s ) (P = 0.004), multiple aneurysms (P = 0.001), feeding by the vertebro basilar system (P = 0.002), and location in the basal ganglia (P = 0.0 4). Six parameters of AVM angioarchitecture were correlated with a cli nical presentation of hemorrhage. Among these parameters, three (feedi ng by perforators, number of aneurysms, and presence of intranidal ane urysms) were well displayed by superselective angiogram.