ArticleBMJ case reports2024
Benign paraspinal ganglioneuroma with paraneoplastic opsoclonus myoclonus syndrome.
Article in BMJ case reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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4 authors at 2 institutions in 2 countries.
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Abstract
Opsoclonus-myoclonus-ataxia syndrome (OMAS) is a rare immune-mediated movement disorder occurring as a paraneoplastic manifestation of neuroblastic tumours (NTs), especially neuroblastoma in infancy. Ganglioneuroma (GN), the benign tumour in the spectrum, is rarely associated with OMAS. We report the case of a child in her second year of life presenting with acute onset of progressive paraplegia and OMAS. MRI showed diffuse and infiltrating left paraspinal mass from T3-T9 levels with differentials of neuroblastoma or ganglioneuroblastoma. Histopathological and immunohistochemistry examination of the excised tumour showed maturing GN. The OMAS was managed with intravenous immunoglobulin and steroids. In the 6-month follow-up, the child has a residual motor weakness with myelomalacia in neuroimaging. The case report substantiates the occurrence of OMAS as paraneoplastic manifestation in NTs, including benign, in children younger than 2 years with a female predilection.
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