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Parietal lobe arteriovenous malformation

Case contributed by Dr Ian Bickle


Head trauma.

Patient Data

Age: 65 years
Gender: Male

High attenuation abnormality with multiple small foci of calcification in the left parietal lobe cortex, with large venous collaterals extending into the superior sagittal sinus. 

No acute hemorrhage.

The remainder of the intracranial appearances are normal.

Multiple serpiginous flow-voids in the left parieto-occipital region. Arterial feeders from branches of the left MCA. Large draining veins into the superior sagittal sinus at the vertex.

Minor gliotic change in the adjacent cerebral parenchyma. No evidence of acute hemorrhage was seen on T1-weighted images.

Case Discussion

Left parieto-occipital arteriovenous malformation. Like cavernomas, these may be incidental findings on CT head imaging performed for head trauma or other unrelated indications.

The focal high attenuation from smaller AVMS and cavernomas may be mistaken for subacute hemorrhage. Not infrequently calcification is observed on CT in the AVM.

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Case information

rID: 78013
Published: 20th Jun 2020
Last edited: 25th Nov 2020
Inclusion in quiz mode: Included

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