File:Cerebral arteriovenous malformation (Radiopaedia 39259-41506 Coronal T1 55).png

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Cerebral_arteriovenous_malformation_(Radiopaedia_39259-41506_Coronal_T1_55).png ‎(512 × 512 pixels, file size: 206 KB, MIME type: image/png)

Summary:

Description
  • Radiopaedia case ID: 39259
  • Image ID: 15518185
  • Image stack position: 55/91
  • Plane projection: Coronal
  • Aux modality: T1
  • Study findings: Right frontal paramedian arteriovenous malformation nidus fed predominantly by a branch from the right anterior cerebral artery and drained by enlarged veins that run superiorly through the interhemispheric fissure to the superior sagittal sinus. The nidus measures 2.2 cm in its larger diameter and is not associated with surrounding brain parenchyma signal abnormalities. Right middle cerebral artery opercular branches are prominent compared to the contralateral circulation and seem to also feed the AVM nidus. Small saccular apparent aneurysm inferiorly oriented is identified on the A1 segment of the right anterior cerebral artery, measuring 3.1 x 2.1 mm. Remainder circle of Willis arteries are unremarkable. Remainder appearance and intensity of brain parenchyma are normal. Ventricular system and cisternal spaces appear normal. There is no shift of the midline structures. The visualized orbits and calvarium appear unremarkable. Minima mucosal thickening on the floor of the maxillary sinuses. Conclusion: Right frontal cerebral arteriovenous malformation (grade 1 accordingly to the Spetzler-Martin AVM grading system). Small probable inferior projection ACA / AComm aneurysm.
  • Modality: MRI
  • System: Central Nervous System
  • Findings: Right frontal paramedian arteriovenous malformation nidus fed predominantly by a branch from the right anterior cerebral artery and drained by enlarged veins that run superiorly through the interhemispheric fissure to the superior sagittal sinus. The nidus measures 2.2 cm in its larger diameter and is not associated with surrounding brain parenchyma intensity abnormalities. Right middle cerebral artery opercular branches are prominent compared to the contralateral circulation and seem to also feed the AVM nidus. Remainder circle of Willis arteries are unremarkable.
Date Published: 28th Aug 2015
Source https://radiopaedia.org/cases/cerebral-arteriovenous-malformation-17
Author Bruno Di Muzio
Permission
(Permission-reusing-text)		 http://creativecommons.org/licenses/by-nc-sa/3.0/

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