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Corel Medical Series: Cancer
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p36.dxr
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00049_Field_SRC.p36.A.6.txt
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1997-02-04
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743b
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Children with the inherited form often
develop tumors in both eyes and may develop
other malignancies later in life, such as
sarcomas, leukemia or melanoma.
• In children with the spontaneous form, the
tumor cells also have defects involving both
RB genes, but these defects have not been
inherited. These children usually have only
one tumor and are not predisposed to develop
other cancers.
If detected early, both inherited and
spontaneous forms of retinoblastoma are
curable with radiotherapy , and vision can be
preserved. Genetic probes can detect the
abnormal RB gene, identifying children at risk.
These children need careful clinical monitoring
and frequent eye examinations.