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Prognostic Factors in Retinoblastoma

Arun D. Singh, MD · Carol L. Shields, MD · Jerry A. Shields, MD

Which of the following statements with regard to retinoblastoma is true:

1. All cases are sporadic.
2. All cases are inheritable.
3. All unilateral cases are sporadic.
4. All bilateral cases are inheritable.

(Click on an answer to see if it is correct)