もやもや病びょう

noun

moyamoya disease

A rare, progressive cerebrovascular disorder caused by blocked arteries in the basal ganglia, leading to a characteristic 'puff of smoke' appearance on angiography.

• もやもや病びょうは、脳のうの血けっ管かんが徐じょ々じょに詰つまっていく難なん病びょうです。

  Moyamoya disease is an intractable illness in which the blood vessels in the brain gradually become blocked.