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A case of metastatic clear cell carcinoma of the paranasal sinus in 19 years after nephrectomy Kentaro Ichijo 1 , Kazuo Yasuhara 1 , Kyohei Horikiri 1 , Masaaki Takahashi 1 , Hiroko Houjo 1 1Department of Otorhinolaryngology, Takeda General Hospital pp.975-979
Published Date 2018/10/20
DOI https://doi.org/10.11477/mf.1411201854
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 Renal clear cell carcinoma often metastasizes hematogenously, whereas it rarely metastasizes to the paranasal sinus. A 81-year-old man was diagnosed with renal clear cell carcinoma and underwent right nephrectomy in 1998. In 2017, he complained of right nasal bleeding. CT and MRI showed a large mass extending to the right nasal cavity and maxillary paranasal sinus. Positron emission tomography-computed tomography indicated a malignant tumor. Endoscopic sinus surgery was performed. Based on the results of immunohistochemical examination, we made the diagnosis of metastatic renal clear cell carcinoma. Temsirolims was selected for treatment.


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電子版ISSN 1882-1316 印刷版ISSN 0914-3491 医学書院

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