@article{oai:repository.lib.tottori-u.ac.jp:00004757,
 author = {石田, 雄介 and Shoji, Fumi and Ohta, Nobuo and Murakami, Kazuhiro and Noguchi, Naoya and Suzuki, Takahiro and Saito, Yutaro and Kitaya, Shiori and Tateda, Yutaka and Yamazaki, Muneharu and Kusano, Yusuke and Nakazumi, Miho and Ishida, Yusuke and Ise, Kazue and Kagaya, Yuriko and Tamura, Ryo and Murakami, Keigo and Nakamura, Yasuhiro},
 issue = {4},
 journal = {Yonago Acta Medica, Yonago Acta Medica},
 month = {Nov},
 note = {A 79-year-old Japanese woman presented with a rare case of metastatic renal cell carcinoma to the left sphenoid sinus with left nasal bleeding. She had previously had right radical nephrectomy for renal cell carcinoma at the age of 64 years and brain and spinal cord infarction at 74 years. Endoscopic examination revealed no mass in the nasal cavity. CT and MRI revealed a tumor in the left sphenoid sinus. The size of the tumor increased gradually from 12 to 15 years after the radical nephrectomy. Complete resection with endoscopic surgery was performed without preoperative embolization. The tumor cells had clear cytoplasm and were arranged in a trabecular pattern lined by a layer of endothelial cells. These findings were identical to the pathological findings of the surgical specimen of the renal cell carcinoma from 15 years previous. A pathological diagnosis of metastatic renal cell carcinoma of clear cell type (grade 1) was made. PET-CT demonstrated no metastasis. The patient’s condition was successfully managed with excision of the tumor, and she remains well with no evidence of recurrence and metastasis 36 months after treatment. Metastatic renal cell carcinoma to the sphenoid sinus is rare, but it might be considered in the differential diagnosis of masses in the paranasal sinus even long after initial treatment of renal cancer.},
 pages = {368--371},
 title = {Metastatic Renal Cell Carcinoma to the Left Sphenoid Sinus: A Case Report in Light of the Literature},
 volume = {63},
 year = {2020},
 yomi = {ムラカミ, カズヒロ and イシダ, ユウスケ and ムラカミ, カズヒロ and イシダ, ユウスケ}
}