<prompt> In a child with retinoblastoma, which of the following is NOT a common finding in the X-ray: September 2012Intraocular calcificationIntracerebral calcificationMultiple calcified mass in craniumWidening of optic foramen  <response>: Ans. B i.e. lntracerebral calcification Retinoblastoma May be bilateral in 30-40 cases paicularly familial ones, Knudsons hypothesis is related to Rb MC manifestation of Rb: Leukocoria Amaurotic cats eye reflex Treatment of diffuse Rb: Enucleation removal of eyeball with poion of optic nerve from orbit Treatment of small Rb: Brachytherapy Treatment of bilateral Rb metastatic disease: Chemotherapy 