Neglected Advanced Retinoblastoma Presenting As Huge Orbital Mass

To report late presentation of bilateral retinoblastoma. Case report: A 3 year old girl presented with huge orbital mass enlarging over her face on the left side. She underwent exentration and histopathologic evaluation. A diagnosis of retinoblastoma was made. This patient had leukocoria of the right eye and another intra ocular mass. This patient represented a rare form of bilateral retinoblastoma with extensive progression. Although most of bilateral retinoblastoma cases are diagnosed early، there are neglected cases which present at advanced stage.