This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tumors, Subject name: Ophthalmology
[{'content': 'Which of the following tumours present with proptosis? \nSelect and explain. \nA. Nephroblastoma, B. Neuroblastoma, C. Ewings sarcoma, D. All of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: PROPTOSIS It is defined as forward displacement of the eyeball beyond the orbital margins. Causes of bilateral proptosis include: Tumours: These include symmetrical lymphoma or lymphosarcoma, secondaries from neuroblastoma, nephroblastoma, Ewing's sarcoma and leukaemic infiltration. Ref:- A K KHURANA; pg num:-379,381", 'role': 'assistant'}]