| Abstract: |
The management of arteriovenous and vascular malformations, which containAVFs; this represents some of the greatest challenges facing vascular surgeons andother specialists regarding dealing with them difficulties in diagnosis and treatmentbecause of the treating physician’s lack of sufficient personal experience from whichto develop or refine proper management strategies (Villavicencio, 2010).Arteriovenous malformation or AVM is an abnormal connection betweenveins and arteries, usually congenital. This pathology is widely known because of itsoccurrence in the central nervous system, but can appear in any location. The genetictransmission patterns of AVM, if present, are unknown. AVM is not generallythought to be an inherited disorder, unless in the context of a specific hereditarysyndrome (Tongers, 2009).AVM consists of feeding arteries, fistula or nidus, and draining veins.Occlusion of the feeding arteries alone produces a temporary decrease in flowthrough the malformation, but if the nidus is still present, it is reperfused throughcollateral vessels quickly (Lee, 2009).Cavernomas, dural fistulae, and CVM whose architecture had been modifiedby surgery, embolization or radiosurgery are encompassed by the term vascularanomalies Through the International Society for Vascular Anomalies in 1996, theseconditions, but then are separated into tumors and malformations. The termcongenital has been DROPped an embryologic basis and anatomy of VascularMalformations. The vascular system first appears during the 3rd gestational week asa network of interlacing blood spaces in the primitive mesenchyme (Sumner, 2008).
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