Ophthalmology Diseases of orbit, Lids and lacrimal apparatus d9271a00 The most common second malignant in survival of retinoblastoma A Thyroid cancer B Nasopharyngeal carcinoma C Optic glioma D Osteosarcoma High-Yield Explanation Osteogenic sarcoma is the most common ocular malignancy in retinoblastoma. IT occurs in hereditary cases Refer khurana 6/e p 421