Retinoblastoma best evaluated by-: (A) Ultrasonography, (B) CT SCAN, (C) CT SCAN + MRI, (D) MRI
Answer is C. Retinoblastoma: To detect calcification in orbit: CT Scan To evaluate nerve invasion: MRI(preferred) 2nd MC cancer in patient with retinoblastoma- osteosarcoma MC bone tumor that develops after radiotherapy to bones: osteosarcoma Trilateral retinoblastoma (TRb): bilateral retinoblastoma (Rb) + Pineal Gland tumor Quadrilateral retinoblastoma: Trilateral retinoblastoma + supracellular mass INTRAORBITAL CALCIFICATION: RETINOBLASTOMA