malignant ocular tumor of retinal cells; usually occurs before the third year of life; composed of primitive small round retinal cells
retinoblastoma详细解释
ret.i.no.blas.to.ma n.（名词）【复数】ret.i.no.blas.to.mas 或 ret.i.no.blas.to.ma.ta [-m…-t…] A hereditary malignant tumor of the retina, transmitted as a dominant trait and occurring chiefly among infants.视网膜神经胶质瘤：视网膜的一种遗传性恶性瘤，作为一种显性特征遗传，主要发生在婴儿中
