Isolated Developmental Venous Anomaly of the Pons with Transpontine Drainage: Case Report

Tchameni, Y. T. Yamgoue; Messerer, Mahmoud; Zerlauth, Jean-Baptiste; Levivier, Marc; Daniel, Roy Thomas

doi:10.1007/s00062-013-0206-1

Cited by 3 publications

(1 citation statement)

References 39 publications

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“… 4) However, there have been reports of DVAs in the brain stem and the spinal cord that make this theory questionable. 17 – 22) In the former, the enlarged vein inside the brain stem may represent a collecting vein of a DVA in adjacent area or the drainer of other abnormalities such as capillary telangiectasia in the brain stem interpreted as DVA inside the brain stem itself. In the latter, such DVA appearance may represent the exaggerated magnification of the normal intrinsic collecting system by the flat panel detector catheter angiotomography, a technique that has never been used for the study in this area.…”

Section: Etiology and The Structure Of Dvasmentioning

confidence: 99%

Developmental Venous Anomaly: Benign or Not Benign

Aoki

Srivatanakul

2016

Neurol. Med. Chir.(Tokyo)

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Developmental venous anomalies (DVAs), previously called venous angiomas, are the most frequently encountered cerebral vascular malformations. However, DVA is considered to be rather an extreme developmental anatomical variation of medullary veins than true malformation. DVAs are composed of dilated medullary veins converging centripetally into a large collecting venous system that drains into the superficial or deep venous system. Their etiology and mechanism are generally accepted that DVAs result from the focal arrest of the normal parenchymal vein development or occlusion of the medullary veins as a compensatory venous system. DVAs per se are benign and asymptomatic except for under certain unusual conditions. The pathomechanisms of symptomatic DVAs are divided into mechanical, flow-related causes, and idiopathic. However, in cases of DVAs associated with hemorrhage, cavernous malformations (CMs) are most often the cause rather than DVAs themselves. The coexistence of CM and DVA is common. There are some possibilities that DVA affects the formation and clinical course of CM because CM related to DVA is generally located within the drainage territory of DVA and is more aggressive than isolated CM in the literature. Brain parenchymal abnormalities surrounding DVA and cerebral varix have also been reported. These phenomena are considered to be the result of venous hypertension associated with DVAs. With the advance of diagnostic imagings, perfusion study supports this hypothesis demonstrating that some DVAs have venous congestion pattern. Although DVAs should be considered benign and clinically silent, they can have potential venous hypertension and can be vulnerable to hemodynamic changes.

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Section: Etiology and The Structure Of Dvasmentioning

confidence: 99%

Developmental Venous Anomaly: Benign or Not Benign

Aoki

Srivatanakul

2016

Neurol. Med. Chir.(Tokyo)

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Isolated hemorrhagic arterialized DVAs: revisiting symptomatic DVAs

et al. 2020

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Hemifacial spasm caused by the brainstem developmental venous anomaly: A case report and review of the literature

Grigoryan

Ситников

Grigoryan

2020

Surgical Neurology International

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Background: Hemifacial spasm (HFS) is usually caused by vascular compression of the root exit zone (REZ) of the facial nerve. Dual compression of the REZ by veins and arteries is also associated with HFS, but venous origin alone is rarely reported. We present a rare case of HFS caused by the brainstem developmental venous anomaly (DVA) treated with microvascular decompression (MVD). Case Description: A 30-year-old women presented with the left-sided HFS since the age of 18 years. The brainstem DVA was diagnosed by magnetic resonance imaging (MRI) and followed by two attempts of MVD at some other clinics without any improvement. At our hospital, MVD was performed through a left retromastoid craniotomy. Intraoperatively, after detaching the strong adhesions between the cerebellar hemisphere, petrosal dura and lower cranial nerves, and removing the Teflon sponge inserted during the previous operations, the compressing large vein was found, separated from facial nerve REZ and MVD was completed. The postoperative computed tomography angiography and MRI showed the thrombosis of the main trunk of DVA and decompression of the facial nerve REZ. Complete cessation of HFS with hearing preservation was observed with only slight weakness of mimic muscles which disappeared within 3 months after surgery. Conclusion: HFS associated with brainstem DVA is a very rare condition. MVD of the facial nerve REZ with transposition of the large draining vein should be considered as an effective treatment option.

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Isolated Developmental Venous Anomaly of the Pons with Transpontine Drainage: Case Report

Cited by 3 publications

References 39 publications

Developmental Venous Anomaly: Benign or Not Benign

Developmental Venous Anomaly: Benign or Not Benign

Isolated hemorrhagic arterialized DVAs: revisiting symptomatic DVAs

Hemifacial spasm caused by the brainstem developmental venous anomaly: A case report and review of the literature

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