<prompt> All are X-ray findings of retinoblastoma except :Widening of optic canalIntra cerebral calcificationIntraocular calcificationSecondaries in cranial bones  <response>: B i.e. Intracerebral calcification Retinoblastoma is the malignant congenital intraocular tumor arising from primitive photoreceptor cells of retina included in primitive neuroectodermal tumor. Histologically, it shows Flexner-Wintersteiner rosettesQ 50 Home-Wright rosettesQ fleurettesQ. Clinically presents with cats eye reflexleukokoriaQ. Retinoblastoma is the most common cause orbital calcificationQ nodular or punctate calcification is ourable prognostic sign. Enlargement of orbit orbital canalQ occurs dt involvement of optic nerve intracranial extension. Metastasize to meninges, cranial bonesQ, bone marrow, lung, liver, lymph node. 