<prompt> All are X-ray findings of retinoblastoma exceptWidening of optic canalIntra cerebral calcificationIntraocular calcificationSecondaries in cranial bones  <response>: Retinoblastoma is the most common cause of orbital calcification nodular or punctate calcification is favourable prognostic sign.Enlargement of orbit orbital canal occurs dt involvement of optic nerve intracranial extension.Metastasizes to meninges, cranial bones, bone marrow, lung, liver, lymph node. 