Prof. Kuroda joined International Stroke Conference 2016 in Los Angeles, USA between February 17 and 19, 2016. His oral presentation was entitled “Repeat Bypass Surgery for Moyamoya Disease Refractory to Previous Surgery”. In this paper, the indication, surgical technique, and outcome of 17 surgeries for 15 patients with moyamoya disease were reported. We would like to further contribute to improve the outcome in patients with moyamoya disease through endless efforts.