This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy, Development and clinical examination, Subject name: Ophthalmology
[{'content': 'Which of the following investigation contraindicated in retinoblastoma \nSelect and explain. \nA. CT, B. USG, C. FNAC, D. MRI', 'role': 'user'}, {'content': 'Answer: C \nExplanation: FNAC may lead to tumor seeding. Retinoblastoma is a rare malignant tumor of the retina usually seen in children before 5 years of age. The treating ophthalmologist suspected primary intraocular tumor, metastatic carcinoma, malignant melanoma, or lymphoma and referred the patient for fine needle aspiration cytology (FNAC) Reference : Aravind&;S FAQ&;S in ophthalmology, first edition, page no 409', 'role': 'assistant'}]