Partial Spontaneous Regressive Arteriovenous Malformation

Spontaneous Occlusion of an Intracranial Arteriovenous Malformation

“…It seems likely that this calcification, although it did not fill with contrast medium during the angiographic studies, constituted part of the AVM, forming the most posterior and lateral portions. A similar finding was described by K u s hner and Alexander [9].…”

“…Kelly et al [7] described the decrease in size of the AVM in one of their cases. Kushner and A lexan der [9] presented the case of a 46-year-old patient with an AVM at the origin of the right middle cerebral artery, which spontaneously disap peared almost completely 7 years later, with only a small angiomatous mass seen during the venous phases. Sukoff et al [13] published the findings of a case of a 59-year-old patient with an AVM in the right par ietal region which filled by means of an anomalous middle cerebral artery.…”

Spontaneous regression of brain arteriovenous malformations

“…These factors include hemodynamic alterations caused by a subarachnoid hemorrhage [62], subdural hematoma, intracerebral hematoma [16,45,49,54,61,62], the presence of a brain tumor [47], surgery [41], and endovascular and radiation therapy. Other factors are the presence of a single arterial feeder [41,44,47], a small nidus-size [13,49], the number [24,47,49] and architecture [15,24,40] of draining veins, hypercoagula- bility [57], embolization from an associated thrombosed aneurysm [47], the presence of atherosclerosis [30,41,55] and the use of oral contraceptives [11,13,15,21,34,38,40,41,44,45,47,49,54]. However, all of these factors also occur in AVMs that do not, or only partially, regress.…”

“…Spontaneous and complete regression of an AVM is a well recognized, but rare phenomenon, with an estimated prevalence of 0.8 to 1.3 % [2,50]. Several causes of spontaneous regression have been postulated, such as premature atherosclerosis [8], embolus [30], turbulence in feeding vessels [15], elevated estrogens [57], hemodynamic changes associated with surgery [38] and mass effect due to haemorrhage from the AVM [43].…”

Spontaneous Thrombosis of a Ruptured Brain Arteriovenous Malformation: The Argument for Early Conservative Management

“…Data describing age, sex, presentation, location of AVM, number of arterial feeders, venous drainage outlets, and size of the nidus were obtained from the search results [4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28]. …”