提高了生活质量，无严重并发症发生。
Improve the quality of life, no serious complications occurred.
内镜治疗组癌灶完全切除率为97.5%，无严重并发症发生。
The removal rate of cancerous lesions by endoscopic resection was 97.5% without serious complications.
除1例诉复视外，21例患者无双眼视障碍的症状，无严重并发症发生。
One patient complained diplopia, and the other 21 patients did not complained any symptoms according to binocular disorders. No cases of severity complication were found.
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