[名词解释] 恶性贫血

贫血的分类方法有哪几种? 肺气肿胸腔积液 ["清音","鼓音","过清音","浊音","实音"] 贫血 周围型面神经麻痹动眼神经麻痹 ["单侧上眼睑下垂","单侧眼侧闭合障碍","单侧眼球突出","双侧眼球突出","单侧眼球凹陷"] AA-PNH综合征 恶性贫血