<prompt> The mother of a one and a half year old child gives history of a white reflex from one eye for the past 1 month. On computed tomography scan of the orbit there is calcification seen within the globe. The most likely diagnosis is:Congenital cataractRetinoblastomaEndophtalmitisCoats disease  <response>: Ans. b RetinoblastomaRef: Parsons 22e, p. 400, Kanski 7e, p. 514Presence of leukocoria white pupillary reflex and calcification within the globe in a one and a half year old child is almost diagnostic of retinoblastoma. 