This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Childhood tumors, Subject name: Pediatrics
[{'content': 'Wilms&; tumor is associated with the following except \nSelect and explain. \nA. Aniridia, B. Horse-shoe kidney, C. Hemihyperophy, D. Opsoclonus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Wilms tumor is associated with aniridia,genitourinary abnormalities like horse shoe or fused kidney,mental retardation,Denys Drash syndrome(renal failure,renal mesangial sclerosis,male hermaphrodism) & Beckwith- Wiedeman syndrome(hemihyperophy,macroglossia,omphalocoele,organomegaly). Opsoclonus-myoclonus syndrome is associated with Neuroblastoma.It is characterised by rapid eye movements,ataxia, and irregular muscle movements and occurs in 2-4% of patients. Reference:Essential pediatrics-Ghai,8th edition,page no:617.', 'role': 'assistant'}]