Methods To puncture from inferior nasal meatus and canine fossa with a nasal endoscopic needle, then, to cut away the pathological tissue ofmaxillarysinus under the endoscopic observation.
方法：鼻窦镜穿刺套管针分别从下鼻道、尖牙窝穿刺，在鼻内窥镜直视下切除上颌窦病变；
2
Conclusion ct scanning, biopsy puncture and irrigation of the maxillarysinus is very valuable for diagnosis.