ret路i路no路blas路to路ma
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plural retinoblastomas
also retinoblastomata\ 藢re-t蓹-n艒-藢bla-藞st艒-m蓹-t蓹
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: a malignant tumor of the retina that develops during childhood, is derived from retinal germ cells, and is associated with a chromosomal abnormality