倒生性乳頭狀瘤與肉癌類癌在上呼吸腸胃道並不常見，而其治療方式也未完全有定論。本文中提出一80歲患有鼻腔內腫瘤之男性病人，經功能性內視鏡鼻竇手術切除後，病理報告顯示此腫瘤併有倒生性乳頭狀瘤與肉癌類癌兩種病理組織。因本病例為一侵犯性腫瘤且具特殊的病理特徵，術後病人接受以三照野方式之放射線治療，總劑量為5940cGy。至目前腫瘤並無復發跡象，因此以放射線治療作為對此特殊疾病的輔助療法可望有助於增加對腫瘤的局部控制。

　　　　　Inverted papilloma and sarcomatoid carcinoma are both uncommon tumorsof the upper aerodigestive tract, and the treatment modalities arecontroversial. We report a case of an 80-year-old male patient with a nasalcavity tumor. Functional endoscopic sinus surgery was performed and thepathology revealed inverted papilloma and sarcomatoid carcinoma. Thiscombination has not previously been reported. Radiotherapy was administratedbecause of advanced disease, inadequate surgical margins, and the uniquepathological findings. A 3-field technique was used, with a total dose to 5940cGy. No recurrence was noted. This suggests that radiotherapy may be auseful adjuvant therapy for improving local control of this disease.