<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 isCongenital cataractRetinoblastomaEndophthalmitisCoats disease  <response>: While pupillary reflex leukocoria with calcification in tumor mass is characteristic of retinoblastoma. 