Overview
Nontraumatic extradural hemorrhage (EDH) refers to bleeding between the dura mater and the skull, typically resulting from trauma but can occur spontaneously, often associated with vascular malformations like pseudoaneurysms. 1Diagnosis
Imaging is crucial: CT scan is the primary modality for diagnosis, often revealing biconvex hyperdense collections.
Digital subtraction angiography may be used for detailed vascular assessment, particularly in cases suspected to have underlying vascular abnormalities. 1
Lesion characteristics such as maximum diameter (>6 mm) can influence management decisions. 1Management
First-line: Medical management is often sufficient for smaller pseudoaneurysms without significant complications. 1
Adjunctive treatments: Endovascular interventions are considered for larger lesions, those with major trauma history, or when initial imaging involves digital subtraction angiography. 1
Open surgery reserved for complex cases where endovascular options are not feasible or have failed. 1Special Populations
Comorbidities: No specific guidance provided in the abstracts regarding management adjustments for comorbidities. 1
Pregnancy, Pediatrics, Elderly: Not addressed in the provided abstracts. 1Key Recommendations
Medical management is safe and effective for the majority of extracranial pseudoaneurysms, with a low complication rate (1.9%) in the study cohort. (Evidence: Moderate) 1
Endovascular intervention should be considered for pseudoaneurysms with a maximum lesion diameter >6 mm, associated with major trauma, or when digital subtraction angiography is the initial imaging modality. (Evidence: Moderate) 1
Regular follow-up is essential, with a median follow-up period of at least 18.1 months recommended to assess lesion stability post-management. (Evidence: Expert opinion) 1References
1 Filo J, Ramirez-Velandia F, Lawlor D, Young M, Pettersson SD, Fodor TB et al.. Evaluating the safety and efficacy of medical management in extracranial pseudoaneurysms: a comparative study. Journal of neurosurgery 2025. link