Resection of a posterior fossa arteriovenous malformation complicated by leaked Onyx: a case report and review of literature.

Onyx extravasation is a rare complication during embolization of arteriovenous malformations (AVM). We present a case of embolization complicated by Onyx leak into the cerebellum later encountered during surgical excision of the AVM. Our goal is to report on these rare events and to outline the successful treatment of this complication.

patient records are reviewed for medical history, laboratory and radiological examinations, and outpatient follow-up clinics. A 62-year-old woman presented with a hunting Hess modified grade 2 and grade Fisher 2 subarachnoid hemorrhage (SAH) secondary to a ruptured left lower posterior cerebellar artery (PICA) aneurysm associated with vermian superior cerebellar AVM.

After endovascular intervention, totally embolized aneurysm; However, only 75% of the AVM can be safely eliminated. Onyx extravasation of aneurysm rupture was recorded on the first angiogram. Elective suboccipital craniectomy then planned for residual AVM resection where extravasated Onyx caused a disturbance during resection surgery. Post-op angiogram confirmed complete resection of the AVM, as well as most of the extravasated Onyx. Patients did well post-surgery, neurological residual intact during the course of the hospital.

Although rarely reported in the literature, Onyx extravasation is a potential complication that neurosurgeons have to be prepared to face. Compliance of Onyx into the surrounding parenchyma could inhibit optimal surgical resection of AVM and increased complications. Therefore, careful surgical dissection should be done with special care for delicate neurovasculature. In this case, a complete resection of the AVM and the mass of the Onyx safely reached.

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A4020-100G 100G
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A4020-500G 500G
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16-0021-500 500 g
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CH058 500 g
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TRIS
CH059 1kg (2 x 500g [CH058])
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CH060 5kg (10 x 500g [CH058])
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IB70145 5KG
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IB70162 HCL 500GM
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TRIS
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GP7166-100G 100 g
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GP7166-1KG 1 kg
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TRIS
GP7166-250 250
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GP7166-250G 250 g
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GP7166-5 5
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GP7166-500 500
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GP7166-500G 500 g
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MBS4156389-500g 500g
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Description: Tris buffer

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Description: Others|Reagents

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TRIS hydrochloride
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EUR 1200
Description: 3424-21-3

Tris Hydrochloride (Tris HCl) for molecular biology, 99%
89781 100 Gms
EUR 9.37
Description: Part A

tris-Epibrassinolide
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EUR 9200
Description: 78821-42-8

Tris(Hydroxymethyl)- Aminomethane Oxalate extrapure(Tris Oxatlate), 99%
55088 100 Gms
EUR 10.88
Description: Part B

Tris(Hydroxymethyl)- Aminomethane Maleate extrapure (Tris Maleate), 99.5%
32119 100 Gms
EUR 11.63
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Tris(Hydroxymethyl)- Aminomethane Nitrate extrapure (Tris Nitrate), 99%
25913 100 Gms
EUR 15.53
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Tris(Hydroxymethyl)- Aminomethane Sulphate extrapure (Tris Sulphate), 98%
47952 100 Gms
EUR 8.18
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42020232-1 4 L
EUR 136.65

Tris(Hydroxymethyl)- Aminomethane Carbonate extrapure (Tris Carbonate), 99%
23017 100 Gms
EUR 15.53
Description: Part B

Tris(Hydroxymethyl)- Aminomethane Succinate extrapure (Tris Succinate), 99%
63291 100 Gms
EUR 12.3
Description: Part B

Tris Base, 500g
20-200 500g/Unit
EUR 48.73
Description: Tris(hydroxyamino)methane

Tris Base, 1kg
20-201 1kg/Unit
EUR 92.19
Description: Tris(hydroxyamino)methane

Tris Base USP
MBS6114309-100g 100(g
EUR 155

Tris Base USP
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