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A 19-year-old female presented with an unusual intracranial extracerebral neuroblastoma originating from the dura mater. The tumor was located in the right frontal convexity, and had adhered neither to the underlining arachnoid membrane nor the cerebral cortex. The tumor feeders were meningeal arteries. Light microscopy showed the tumor consisted of small compact cells, forming numerous Homer-Wright rosettes. Immunohistochemical examination and electron micrography confirmed the diagnosis of neuroblastoma. Intracranial extracerebral neuroblastoma is extremely rare, especially originating from the dura mater. This neuroblastoma probably originated from heterotopic neuroglial nest cells in the meninges.

Intracranial Extracerebral Neuroblastoma Originating from the Convexity Dura Mater —Case Report—