外耳道

Without external auditory meatus. And tympanum and ear bones development are undesirable, have audition obstacle.

无外耳道。且鼓室和听骨发育不良，有听力障碍。

Objective:To collect the information about necrotizing external otitis for clinical practices.

目的：增加对坏死性外耳道炎的认识，为临床积累资料。

Most forms of Otitis Externa cause itching, which may be accompanied by considerable discomfort.

大多数形式的外耳道炎事业发痒，这可能是伴随着相当大的不适。

Gently pull auricle upward and backward to ease insertion of otoscope

8226；双手指置于耳屏前或稍插入外耳道，检查颞颌关节的运动

Insert otoscope into external auditory meatus to observe tympanic membrane

8226；用手稍向后上方牵拉耳廓，使外耳道变直，以便插入耳镜

Methods Twenty-two pieces of temporal bone were taken for this study. The mastoid cavity was opened, scutum removed,"bridge" broken down, posterior wall of external auditory canal abraded and the related anatomic structures were fully exposed. The distance between the origin of facial nerve canal and the anterior border of round window （ OOFNC-ABORW ）, between the highest point of the facial nerve canal and the bottom of posterior mastoid sinus,and between the stapes head and round window niche was measured under operating microscope.

方法取成人颞骨22侧（左右各11侧），用耳科钻磨开乳突腔，去上鼓室盾板、断"桥"，磨低骨性外耳道后壁，充分暴露相关结构，在手术显微镜下测量面神经管垂直段起始部前缘至圆窗龛前缘的距离、面神经管最高点与后鼓室底壁之间的距离、锥隆起的高度（即锥隆起基底到锥隆起顶端的距离）、镫骨头至圆窗龛前缘的距离。

The major HRCT findings were presented with soft tissue mass in 89 middle ears(100%),the destruction of temporal bone including enlargment of the tympanic cavity 89 ears(100%),tympano scutum 55 ears(61.80%),ossicular chain 82 ears(92.13%),facial nerve cannal 54 ears(60.67%),semicircular canal 18 ears(20.22%),external auditory canal 10 ears(11.24%),tympanic tegmen 15 ears(16.85%),vestibular 1 ear(1.12%),cochlea 1 ear(1.12%) and sigmoid sinus plate 7 ears(7.86%).

HRCT表现：中耳腔扩伴软组织团块89耳(100%)，盾板破坏55耳(61.80%)，听小骨破坏82耳(92.13%)，面神经骨管破坏54耳(60.67%)，半规管破坏18耳(20.22%)，外耳道骨质破坏10耳(11.24%)，鼓室盖破坏15耳(16.85%)，前庭及耳蜗破坏各1耳(1.12%)，乙状窦周围骨质破坏7耳(7.86%)。

The distances of the posterior semicircular canal and the groove of sigmoid sinus to the adjacent structures were measured. Results A.

结果 CT扫描测量乙状窦沟宽是(11.44±1.79)mm，深是(5.27±1.93)mm，乙状窦沟底到乳突外表面的距离是(10.38±3.90)mm，乙状窦沟前壁到外耳道后壁的距离是(13.66±2.18)mm。

It is common for one edge of these suture lines (especially the tympanosquamous suture) to project 1 to 3 mm into the EAC lumen as a spinous process.

在这些缝的边缘很容易可以看到向外耳道内放射1~3mm 如棘状突起。

Result:TNF-α was localized in the epitheliun and connective tissue of cholesteatomas studied, particularly on basal and spinous cells and macrophages.

结果：TNF-α定位于胆脂瘤组织的上皮及上皮下结缔组织，较正常外耳道及鼓膜的染色明显增强。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。