?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Metastatic+Renal+Cell+Carcinoma+in+the+Sinonasal+Region&rft.creator=Raj%2C+JA&rft.creator=Mahantachar%2C+V&rft.creator=Rajaram%2C+T&rft.subject=Online+Journal+of+Health+and+Allied+Sciences&rft.description=Sinonasal+region+is+an+exceptional+site+for+metastatic+tumors.+Renal+cell+carcinoma+is+known+to+metastasise+to+the+most+unusual+sites%2C+the+sinonasal+region+being+one+of+them.+Clear+cell+carcinoma+is+its+most+common+histologic+variant.+A+sixty+year+old+male+presented+with+epistaxis+and+nasal+obstruction.+Clinical+examination+and+CT+scan+revealed+a+vascular+tumor+in+the+right+nasal+cavity+and+maxillary+sinus.+The+tumor+was+resected+and+sent+for+histopathological+examination.+A+diagnosis+of+metastatic+clear+cell+renal+cell+carcinoma+was+made+and+confirmed+with+immunohistochemistry+(IHC).+The+pathologic+diagnosis+was+made+without+prior+knowledge+of+the+primary+tumor+in+the+kidney.+Very+few+cases+of+metastatic+renal+cell+carcinoma+in+the+sinonasal+region+have+been+reported+in+literature.+We+present+this+case+to+document+its+occurrence%2C+highlight+the+rarity+and+briefly+discuss+the+differential+diagnoses+of+clear+cell+carcinoma+in+the+sinonasal+area%2C+based+on+morphology+and+IHC.&rft.publisher=Kakkilaya+BS&rft.contributor=Kakkilaya%2C+Dr+Srinivas&rft.date=2013-08-25&rft.type=Journal+(On-line%2FUnpaginated)&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F9167%2F1%2F2013-2-19.pdf&rft.identifier=++Raj%2C+JA+and+Mahantachar%2C+V+and+Rajaram%2C+T++(2013)+Metastatic+Renal+Cell+Carcinoma+in+the+Sinonasal+Region.++%5BJournal+(On-line%2FUnpaginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F9167%2F