Malformations DAVM

Dural arteriovenous malformations (DAVM) are abnormal shunts between the arterial and the venous side of the vascular tree that are located within the dura, most frequently within the wall of or immediately around the venous sinuses. 

Table 4.3. Classification of intracranial dural arteriovenous malformations (DAVMs) in relation to venous drainage pattern...

Fig.4.16a-c. Typical signs of intracranial dural arteriovenous malformation (DAVM) by CT. a Ectatic venous structure and hydrocephalus, b Multiple enhancing vascular structures following contrast administration, representing draining veins, c Dilated subarachnoid spaces due to cortical atrophy... 

Fig. 4.19a,b. Spontaneous cure of dural arteriovenous malformation (DAVM). a Common carotid artery digital subtraction angiography in lateral view demonstrates cavernous sinus (CS) DAVM (arrow) that drains into the superior ophthalamic vein (small arrow), b Follow-up angiography 2 months later demonstrates complete obliteration of the DAVM. No treatment was performed... 

Spinal DAVMs are considered the most common spinal vascular malformations, constituting 80% of all spinal AVMs (Anson and Spetzler 1992 Lee et al. 1998). The majority of these lesions are located in the thoracolumbar region. 

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