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A yellow cystic lesion was completely removed from the maxillary sinus during functional endoscopic sinus surgery and histopathological analysis confirmed the diagnosis of a metastatic RCC. Patient continued to be managed with his pre-existing treatment for advanced RCC.<\/jats:p>","DOI":"10.1136\/bcr-2017-220876","type":"journal-article","created":{"date-parts":[[2017,10,20]],"date-time":"2017-10-20T14:40:12Z","timestamp":1508510412000},"page":"bcr-2017-220876","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":3,"title":["Renal cell carcinoma metastases to the maxillary sinus"],"prefix":"10.1136","volume":"2017","author":[{"given":"Eugene Hung 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