Venous sinus thrombosis with venous haemorrhage

Case contributed by Dr Ian Bickle

Presentation

Patient admitted with eye complaint - detached retina. 24 hour into admission complains of dizzy spell. 14 hours later - seizure.

Patient Data

Age: 43
Gender: Male

Small focal parenchymal abnormality at the left parieto-occipital junction.

Dense enlarged left transverse sinus.

Repeat scan 14 hours - initial scan believed to be normal.

Modality: CT

Acute focal haemorrhage at the grey-white matter interface of the left parieto-occipital region.

Dense left transverse and sigmoid sinus ( although less than the first CT scan ).

Subacute haemorrhage in the left parieto-occipital junction ( non -arterial distribution ).

T1 hyperdense left sigmoid and transverse sinus, with corresponding complete occlusion on the MRV.

 

Follow up scan 15 days later

Modality: CT

Resolving haematoma in the left parieto-occiptal region.  

The degree of low attenuation at this site suggests an established infarction.

The dense left sigmoid and transverse sinus is no longer evident.

Case Discussion

Cerebral venous sinus thrombosis can often present clinically in a very non-specific manner, and easily missed without a strong clinical suspicion.

This case demonstrates sequentially on cross sectional imaging the appearances of dural sinus thrombosis along with an associated haemorrhagic venous infarction and its maturation.

The thrombosis is evident as a hyperdense left transverse/sigmoid sinus - the cord sign.

The infarct and subsequent haemorrhage in a non-arterial distribution additionally alerts the viewer to the suspicion of a venous infarction.

 

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Case Information

rID: 37181
Case created: 28th May 2015
Last edited: 12th Sep 2015
Inclusion in quiz mode: Included

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