Recent progress understanding pathophysiology and genesis of brain AVM-a narrative review
Hans-Jakob Steiger 1 2Affiliations expand
- PMID: 33837504
- DOI: 10.1007/s10143-021-01526-0
Abstract
Considerable progress has been made over the past years to better understand the genetic nature and pathophysiology of brain AVM. For the actual review, a PubMed search was carried out regarding the embryology, inflammation, advanced imaging, and fluid dynamical modeling of brain AVM. Whole-genome sequencing clarified the genetic origin of sporadic and familial AVM to a large degree, although some open questions remain. Advanced MRI and DSA techniques allow for better segmentation of feeding arteries, nidus, and draining veins, as well as the deduction of hemodynamic parameters such as flow and pressure in the individual AVM compartments. Nonetheless, complete modeling of the intranidal flow structure by computed fluid dynamics (CFD) is not possible so far. Substantial progress has been made towards understanding the embryology of brain AVM. In contrast to arterial aneurysms, complete modeling of the intranidal flow and a thorough understanding of the mechanical properties of the AVM nidus are still lacking at the present time.
Keywords: 4D DSA; 4D MRI; Brain arteriovenous malformation; Embryology; Genetic mutation; Hemodynamics; Inflammation.
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