中耳

Methods CT features of the tympanic cholesteatoma which confirmed by operation and pathology in 20 cases were analyzed retrospectively.

目的 研究CT对中耳胆脂瘤的诊断价值方法回顾性分析20例经手术病理证实的中耳胆脂瘤的CT表现。

Results:①The center of the homogeneous density soft tissue masses (mean CT value was 50HU) were located in the middle and lower tympanum,and the external auditory canal or the pharyngotympanic tube was involved in the earlier period;②the destructed b...

结果：中耳癌的CT特征：①表现为以中、下鼓室为中心的软组织密度灶，密度均匀，CT值50HU左右，外耳道及咽鼓管早期受累；②呈溶骨性骨质破坏，形态不规则，边缘无骨硬化表现，外耳道后壁破坏较前壁严重；③病灶侵入颞叶，形成肿块，灶周脑水肿不明显；④增强扫描见病灶有中度强化。结论：CT能确定中耳癌的存在及精确显示肿瘤累及范围。

Objective:To study the expression of TNF-α in the cholesteatoma and elucidate the role of TNF-α in the destruction of bone.

目的：研究肿瘤坏死因子-α在中耳胆脂瘤组织中的表达，探讨其在中耳胆脂瘤骨质破坏中的作用。

Methods Guinea pigs suffering from SOM were divided into three groups randomly, 6 for each group. Ectogenic surfactant, dexamethasone and 0.9% sodium chloride solution were injected into guiea pigs' tympanic cavities of group A, B and C respectively. The biochemical components and activity change of surfactant of Eustachian tube were analysed.

将分泌性中耳炎豚鼠动物模型随机分为A、B、C3组，每组各6只（12耳），分别用外源性表面活性物质、地塞米松和生理盐水注入豚鼠中耳腔内，然后观察豚鼠中耳变化；分析豚鼠咽鼓管内表面活性物质的生化成分和活性变化。

Methods Mice were infected with type Ⅲ(S.pneumoniae) suspension by intratympanic injection.The expression of SP-A in paraffin section of eustachian paratubal gland samples was studied with immunohistochemical technique.

近年来一些研究发现SP-A在中耳黏膜和咽鼓管上皮中表达，但其在炎症状态下的表达如何，以及在抵制中耳感染过程中的作用目前尚不清楚。

RESULTS: Eighty-nine children (58 males and 31 females), ranging in age from 1 to 13 years, participated in the study. Of 172 ears assessed in the study, middle ear effusion was detected in 125; the remaining 47 ears were found to be dry at myringotomy or tympanic aspiration.

结果：共收集89名病患，其中经鼓膜切开术或鼓膜抽吸术确定有中耳积液者有125耳，没有中耳积液者有47耳。

Dehiscence of the floor of the hypotympanum with protrusion of the jugular bulb into the middle ear cavity is a rare otological finding.

颈静脉球经下鼓室底部骨层裂隙膨入中耳腔，是一种罕见的中耳腔血管异常。

By means of acoustic impadance and otoscopic examinations the middle ear function and incidence of secretory otitis media were demonstrated in 43 cases of cleft palate children pre-and post palatal closure.

为研究腭裂修复术对中耳功能的影响，应用声导抗及耳镜检查，以43例腭裂患者于腭裂修复术前及术后半年，进行分泌性中耳炎发病情况及中耳功能检测。

A single peaked tympanogram was typical in normal infants for 1000 Hz admittance,susceptance and conductance tympanograms and there were 28 ears (93.3%), 25 ears (83.3%) and 26 (86.7%) respectively.

在成年人和儿童中，以低频纯音(220Hz或226Hz)为探测音的鼓室声导抗测试被证明对于诊断多种中耳疾病、鼓膜异常以及咽鼓管功能障碍有很好的作用[1，2]，但是目前已经有一些研究表明，它图1高频探测音鼓室导抗图的不同类型。a，b：单峰型；c：无峰型；d：三峰型并不适用于诊断婴儿的中耳病变，特别是年龄小于6个月的婴儿[3-5]。

Methods Tympanometries with 226, 678, 1000 Hz probe tones were obtained from 125 newborns (250 ears) by means of GSI Tympstar middle ear analyzer. The newborns with abnormal tympanograms were referred for temporale CT.

使用GSI Tympstar中耳分析仪，对125例（250耳）新生儿进行226、678、1000Hz探测音鼓室声导抗测试，结果异常或可疑者再行颞骨薄层CT检查明确有无中耳积液。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。