Bilateral encephaloduroarteriosynangiosis (EDAS) in a 6-year-old female for moyamoya disease: case report and technical note with 12-year follow-up

Purpose: To demonstrate that despite disease progression, indirect cerebral revascularisation via EDAS for moyamoya disease is able to maintain sufficient collateral blood supply over a 12-year period. Methods: Case report of an individual patient with surgically managed moyamoya disease followed up with imaging and outpatient clinic assessments. Results: Follow-up imaging and assessment over 12 years concluded with a good functional and radiographic outcome. Conclusion: The extensive follow-up in our case of a 6-year-old female treated with bilateral EDAS procedures for moyamoya disease demonstrates that despite disease progression over 12 years, sufficient collateral blood supply was maintained to achieve a good functional outcome.