THE RELATIONSHIP BETWEEN MORPHOMETRIC CHARACTERISTICS OF VENOUS DRAINAGES OF ARTERIOVENOUS MALFORMATIONS OF THE BRAIN AND TYPES OF CLINICAL COURSE
Background. Arteriovenous malformations of the brain are a rare vascular pathology. Many studies focus on the features of venous drainage of arteriovenous malformations. The angioarchitectural and hemodynamic features of the venous component of arteriovenous malformations can influence on the patient management. Objective. To evaluate the relationship between the features of venous drainage of arteriovenous malformations of the brain and the types of clinical course. Design and methods. Survey included 61 adult patients of the neurosurgical department № 3 of the Polenov RNSI with arteriovenous malformations of the brain of supratentorial localization. Demographic and morphometric characteristics, as well as features of venous drainage of arteriovenous malformations, were assessed. Groups of patients were distinguished according to the type of the course of the disease. Results. The dependence of the hemorrhagic type of course on such factors as drainage exclusively into the deep vein system, as well as the presence of a combination of macrofistula with venous lacunae. The epileptic type was more typical for patients with superficial localization of the arteriovenous malformation. The torpid type of course had no distinctive features. Conclusion. Drainage exclusively into the deep vein system and the presence of a combination of macrofistula and venous lacunae is characteristic of the hemorrhagic type of course. The epileptic type of course was characterized by superficial localization of the malformation.