Abstract
The pathological mechanism of chronic cerebrovascular accident is a unifying concept of slowly progressive damage to cerebral vessels. Small vessel disease (SVD) is a designation of symptoms similar to CVD, while at the same time emphasizing changes in the vessels of the cerebral arteries and veins, due to arterial hypertension, amyloid angiopathy, the consequences of inflammatory diseases and autoimmune pathology. Most "silent" strokes in the elderly are explained precisely by the BMS factor.