Cerebral Venous Thrombosis Diagnostics and Management

Cerebral venous thrombosis (CVT) is a cerebrovascular condition in which blood clots form within the dural sinuses or cortical veins, impeding venous drainage and leading to venous congestion, intracranial hypertension and, in severe cases, cerebral infarction or haemorrhage. Diagnosis demands a high index of clinical suspicion owing to heterogeneous presentations, which range from headache and seizures to focal neurological deficits. Neuroimaging is pivotal: contrast-enhanced magnetic resonance venography and computed tomography venography provide direct visualisation of thrombus, while unenhanced CT may reveal hyperattenuated sinuses or parenchymal changes as indirect signs. Emerging imaging techniques such as magnetic resonance black-blood thrombus imaging enhance sensitivity for subacute clots. Management centres on anticoagulation with low-molecular-weight heparin or unfractionated heparin, even in the presence of intracranial haemorrhage, to promote recanalisation and prevent propagation. In refractory or extensive thrombosis, endovascular interventions, including mechanical thrombectomy, offer promising alternatives though require further evaluation in randomised settings. Prognostic scores have been developed to stratify risk of poor outcome and guide intensity of monitoring. Despite advances, optimal duration of anticoagulation, the role of novel oral agents and indications for invasive procedures remain areas of active inquiry. A coordinated, multidisciplinary approach spanning neurology, neuroradiology and haematology ensures timely diagnosis and individualised therapy, with growing emphasis on long-term follow-up to address persistent neurological sequelae.

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Cerebral Venous Thrombosis Diagnostics and Management publication trend

The graph below shows the total number of articles in cerebral venous thrombosis diagnostics and management across all publications each year (not limited to Nature Index journals).

Technical terms

Cerebral venous thrombosis (CVT): Formation of a thrombus within cerebral veins or dural sinuses, leading to impaired venous outflow and secondary brain injury.

Magnetic resonance black-blood thrombus imaging (MRBTI): An MRI technique that suppresses flowing blood signal to enhance visualisation and quantification of thrombus in venous structures.

Recanalisation: Restoration of blood flow through a previously occluded vein or sinus, achieved spontaneously or through anticoagulation and endovascular therapy.

Endovascular therapy: Minimally invasive procedures, such as mechanical thrombectomy or direct thrombolysis, performed within the vascular lumen to remove or dissolve thrombus.

Intracranial hypertension: Elevated pressure within the skull, often secondary to impaired venous drainage, manifesting as headache, papilloedema or altered consciousness.

CVST-Score: A semi-quantitative index derived from MRBTI data that estimates thrombus burden and predicts severity of intracranial hypertension in CVT patients.

References

1. Reducing the global burden of cerebral venous thrombosis: An international research agenda. International Journal of Stroke (2024).
2. A novel score to estimate thrombus burden and predict intracranial hypertension in cerebral venous sinus thrombosis. The Journal of Headache and Pain (2023).
3. Diagnosis and management of cerebral venous thrombosis. Clinical Medicine (2018).
4. A Practical Score for Prediction of Outcome After Cerebral Venous Thrombosis. Frontiers in Neurology (2018).