"retinoblastoma"^^ . . "114250850"^^ . . . "malignant ocular tumor of retinal cells; usually occurs before the third year of life; composed of primitive small round retinal cells"@en-us . "14250850-n"^^ . . . "0"^^ . . . . . "113443127"@en-us . "retinoblastoma"@en-us . "0"^^ . .