<prompt> Retinoblastomas arising in the context of germ-line mutations not only may be bilateral, but also may be associated with___ so called trilateral retinoblastomaMedulloblastomaPinealoblastomaNeuroblastomaHemangioblastoma  <response>: Ans. b PinealoblastomaRef: Robbins 9thpg 1339Trilateral retinoblastoma refers to bilateral Retinoblastomas pluspinealoblastoma, occurring in individuals inheriting a germline mutation of one RB allele; it is associated with a dismal outcomeRetinoblastoma is the most common primary intraocular malignancy of children. 