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A case of rhabdomyosarcoma of the petrous bone with cranial nerve involvement Mai Matsuno 1 1Department of Diagnostic and Interventional Radiology Graduate School of Medicine, Osaka Metropolitan University Keyword: 横紋筋肉腫 , 錐体骨 , 脳神経浸潤 pp.983-989
Published Date 2025/11/10
DOI https://doi.org/10.18888/rp.0000003015
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We report a 12-year-old boy with embryonal rhabdomyosarcoma of the petrous bone, presenting with left trigeminal and abducens nerve palsies. CT showed an ill-defined osteolytic mass involving the petrous bone and clivus, with enlargement of the foramen ovale. MRI revealed heterogeneous enhancement, extending from the petrous apex through Meckel’s cave to the foramen ovale, indicating cranial nerve involvement, and spreading from the clivus into the extracranial/parapharyngeal space. This case highlights cranial nerve involvement as a key imaging feature in head and neck rhabdomyosarcoma.


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