In retinoblastoma, after enucleation, which tissue is sectioned to find out systemic metastasis-: (A) Central retinal aery, (B) Sclera and episclera, (C) Optic nerve, (D) Voex vein
Answer is C. *After enucleation, optic nerve is examined and if it shows tumor invasion, postoperative radiotherapy to the orbital apex and chemotherapy are given. Ref: Khurana 7th/e p.317.