<prompt> As regards to intraocular retinoblastoma, which one of the following statements is false:94 of cases are sporadicPatients with sporadic retinoblastoma do not pass their genes to their offspringsCalcification in the tumor can be detected on ultrasound scanReese-Ellswoh classifiction is useful in predicting visual prognosis following radiotherapy  <response>: B i.e. Patients with sporadic retinoblastoma do not pass their genes to their offsprings 