以下为句子列表：
英文: Four cases were malignant, including 2 sphenoidal sinus low differentiated carcinoma, 1 adenoidocystic carcinoma, 1 inverting pallilloma with malignant change. 1 case with papillary adenoma underwent endoscopic surgery, and 5 cases underwent surgery by ex
中文: 结果：2例良性肿瘤中，1例乳头状瘤治愈随访40月，1例内翻性乳头状瘤手术后随访15月症状改善。
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