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A case of dedifferentiated liposarcoma in the parapharyngeal space Rikako Tanaka 1 1Department of Diagnostic and Interventional Radiology Graduate School of Medicine, Osaka Metropolitan University Keyword: 脱分化型脂肪肉腫 , 脂肪肉腫 , 傍咽頭間隙腫瘍 pp.987-991
Published Date 2023/10/10
DOI https://doi.org/10.18888/rp.0000002479
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A 12-year-old man was referred to our hospital because of a painless mass in his left parapharyngeal space. The lesion showed hypointensity on T1-weighted images and heterogeneous hyperintensity on T2-weighted images without fat intensity. After a surgical resection, the lesion was revealed to show positive for CDK4 and MDM2 by immunohistopathological staining, indicating dedifferentiated liposarcoma. Although dedifferentiated liposarcomas without fat component diagnosed on MR imaging are very rare, CDK4 and MDM2 may be helpful in diagnosing such tumors.


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電子版ISSN 印刷版ISSN 0009-9252 金原出版

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