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The sinonasal tumors belong to rare diseases. They state 0,2–0,8% of all the malignant neoplasms and about 3% of head and neck tumors. These tumors are two times frequent observed in men than in women, mainly between 50 and 70 years old. In the sinonasal complex besides the primary are seen also the metastatic tumors. They state about 1% of all tumors (kidney, testum, brest, pulmonary).was to retrospective...
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