Method : the clinical data of sixteen teenagers with maxillar sinus hermorrhagic and necrotic polyps were retrospectively analyzed 方法：回顾分析经鼻内镜手术治疗的16例青少年上颌窦出血坏死性息肉的临床资料。
Conclusion : nasal endoscopy is a suitable surgical approach to remove maxillar sinus hermorrhagic and necrotic polyps in teenagers 结论：鼻内镜手术治疗青少年上颌窦出血坏死性息肉具有简单易行、损伤小、并发症少、疗效好等优点，值得推广。
In cases where the posterior fontanel is identified , the division between the natural ostium and the fontanel should be resected to allow free communication between the two 如果确定有前卤存在，应该将前卤和上颌窦口之间的间隔切除，使两者相通。
The opening into the maxillary sinus is probed with a curved suction , and any disease or secretions are removed . the meatotomy is then completed using retrograde forceps 用弯吸引器经窦口插入上颌窦内，以清除窦内病变和脓性分泌物，再用反张钳完成上颌窦口扩大术。
The early mr imaging characteristics of a malignant fibrous histiocytoma ( mfh ) in a 25 - year - old man under the radiation treatment of nasopharyngeal carcinoma were presented in this study 摘要我们在此报告一位二十五岁因鼻咽癌接受放射线治疗后并发上颌窦之恶性纤维组织细胞瘤之早期磁振造影影像的特徵。
The other important factors to increase the cure rate were adequate application of antibiotic , steroid hormone , and rinsing of maxillary sinus could produce cure rate and reduce the recurrence 结论：术前病情评估及手术是治愈的关键，围手术期的治疗及术后使用类固醇激素及上颌窦腔冲洗可促进愈合，减少复发，是提高治愈率的重要因素。
Methods clinical data of 100 children with chronic rhinosinusitis receiving nasal cavity replacement therapy , antral lavage through natural ostium and functional endoscopic sinus surgery were analyzed retrospectively 方法回顾性分析我院收治的100例小儿鼻窦炎，根据患儿不同情况采用药物鼻腔置换疗法、鼻内镜引导上颌窦自然开口置管冲洗及鼻内镜下功能性鼻窦手术治疗的疗效。
Subtle changes , such as polyps in the early stages , can easily be identified . purulent secretions are seen streaming here from the maxillary sinus ostium posteriorally towards the nasopharynx . posteriorally , medial to the tail of the middle turbinate , the ostium of the sphenoid sinus may be identified 能很容易的发现类似早期息肉等微小的病变，还可以显示脓性分泌物从上颌窦口向后流向鼻咽部和后方的中鼻甲的后段和蝶窦的开口。
The uncinate process is incised with a sharpened freer elevator , beginning from its superior portion and taking care to section both the anterior and posterior segments . the cut is brought down vertically , medializing the uncinate process as the dissection progresses 上颌窦口扩大术前应进行钩突切除术，先用尖的剥离器从钩突上部切入钩突，再垂直向下切开钩突粘膜，切开的同时将钩突内移，在钩突从垂直转为横向的平面，切口转向水平并向后，则可将钩突切除。
The device is used to debride polyps intranasally until normal structures can be identified . uncinectomy and maxillary meatotomy are then performed in the usual fashion , using conventional instruments . the ethmoid is entered with the tip of the blade and dissection performed posteriorly , remaining low in the ethmoid until the basal lamella is penetrated and the posterior ethmoid is entered 通常用旋切刀来清除鼻内息肉直达正常的组织，然后用传统器械进行钩突切除和上颌窦窦口扩大，再用刀尖进入筛窦，向后低位切除，至穿透中鼻甲基板而进入后组筛窦。
