<prompt> Wilms; tumor is associated with the following exceptAniridiaHorse-shoe kidneyHemihyperophyOpsoclonus  <response>: Wilms tumor is associated with aniridia,genitourinary abnormalities like horse shoe or fused kidney,mental retardation,Denys Drash syndromerenal failure,renal mesangial sclerosis,male hermaphrodism Beckwith- Wiedeman syndromehemihyperophy,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. 