Article Figures & Data
Figures
- Fig 1.
Coronal T1-weighted MR image obtained at presentation. A mass is visible between the left tentorium cerebelli and the temporal lobe. Mixed signal intensity is depicted within the mass. The high signal intensity is due to thrombus, and the signal intensity void is compatible with vascular channels. This finding is consistent with a partially thrombosed venous channel. An enlarged right transverse sinus is also shown.
- Fig 2.
Lateral left internal carotid angiogram obtained during the arterial phase. The basal and marginal tentorial arteries are enlarged and directly communicate with the venous sac. The secondary recruited pial supply to the dural sinus fistula from the middle cerebral artery is also shown.
- Fig 3.
Follow-up MR images obtained after 11 months.
A, Coronal T1-weighted image shows total obliteration of the venous sac, which was previously shown with preservation of the left transverse sinus. The right transverse sinus, which was previously enlarged, has returned to its normal size.
B, Three-dimensional time-of-flight image of the circle of Willis and posterior fossa in the oblique sagittal projection shows no evidence of residual malformation.
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