Opsomyoclonus is encountered as C/F of-: (A) Meningioma, (B) Neuroblastoma, (C) Neurofibromatosis, (D) Excision
Answer is B. Ans. is 'b' i.e., Neuroblastoma o Neuroblastoma can present as paraneoplastic syndrome of autoimune origin manifesting as ataxia or oposmyoclonus (Dancing eyes and dancing feat). o In such cases primary tumor is in the chest or abdomen and the brain is negative for tumor. o Some tumor produce catecholamines that can cause sweating and HTN and some release vasoactive intestinal peptide (VIP) causing secretary diarrhea.