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I.はじめに
副腎髄質と傍神経筋は共に神経堤より発生する.これらの器官に存在するクロム親和性細胞から生じた褐色細胞腫の中で傍神経節由来のものが傍神経節腫である.傍神経節腫の30-40%は非クロム親和性組織へ遠隔転移をきたし悪性傍神経節腫として区別される11).われわれは頭痛で発症し,頭蓋内転移をきたした悪性傍神経節腫の1例を経験したのでその画像所見,臨床的特色につき文献的考察を加えて報告する.
We report a case of malignant paraganglioma with intracranial metastasis. A 26-year-old man presented with leg pain. On admission a metastatic bone tumor was found. General examination revealed metastatic le-sions in the lung, liver, orbits, ethmoid sinus, anterior mediastinum, and brain. An MRI of the head showed multiple lesions in the skull bone and intracranial space.
A biopsy was performed on the right temporal tumor, resulting in a diagnosis of malignant paragan-glioma. The tumor origin could not be determined. The tumor resection was not indicated because of multiple metastasis. Both chemotherapy and radiotherapy were given to the patient, but a satisfactory outcome was not obtained.
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