鼻内镜下眶减压术治疗甲状腺相关眼病

目的:探讨鼻内镜下眶减压术在甲状腺相关眼病治疗中的价值。方法:回顾性分析9例(12眼)临床确诊为甲状腺相关眼病行鼻内镜下眶减压术患者的相关资料,观察手术前后患者视力、眼压、眼球突出度及运动度、角膜情况以及有无复视等。结果:12眼(100%)术后视力均提高,其中1眼从术前只有光感,术后可感眼前手动,其余11眼视力提高0.1～0.7;10眼(83.3%)眼压降低0.2～21.4mm Hg(1mm Hg=0.133kPa),2眼无明显变化;8眼(66.7%)眼球突出后退1～5mm,另外4眼无明显变化;术前1眼存在角膜溃疡,术后溃疡愈合;术前9眼存在眼球活动受限,其中8眼(88.9%)术后得到不同程度缓解,1眼无变化;术前4例存在复视,术后1例复视消失;除1眼术后出现中鼻道出血行止血处理外,其余11眼未发生其他并发症。结论:鼻内镜下眶减压术具有视野清晰、安全有效及微创的优点,是治疗甲状腺相关眼病较好的术式。     

眶悬带技术在内镜眶减压术中的应用

目的 总结在经鼻内镜眶减压术中应用眶悬带技术,以降低术后复视发生率的初步经验.方法 6例共11眼行经鼻内镜眶壁减压术.其中包括5例(10眼)Graves眼病和1例(1眼)外伤后病例,手术采用眶悬带技术,即保留眼眶内壁赤道高度条带状眶骨膜以稳定内直肌及眼球,避免其过度疝入眶内而改变其运动矢量.对比术前、术后眼球突出度、复视、眼痛、结膜充血等变化.结果 术后患者眼球突出度减少2～5mm,平均回缩3.2mm.术前2例存在复视,术后复视减轻,其余4例无术后复视发生.5例Graves眼病患者眼胀痛消失,结膜充血减轻,眼球活动度及外观改善.1例外伤痛例双眼突出度接近,外观改善.结论 在经鼻内镜眶减压术中保留位于内直肌内侧的条带样眶骨膜,使之成为稳定内直肌及眼球的悬带.该技术能够在保证眶脂肪自悬带上下方溢出而减压的同时,可有效预防术后复视的发生.     

鼻内镜下部分切除眶内下壁治疗甲亢恶性突眼

目的:探讨鼻内镜下眼眶减压术治疗甲亢恶性突眼的疗效。方法:对21例(27眼)严重影响视觉功能或容貌的甲亢恶性突眼患者行鼻内镜下眶内、下壁部分切除术。结果:术后随访6个月～1年(平均7个月),眼球突出度减少2～6mm,平均4.85mm;27眼中术后17眼视力明显提高,9眼无变化,1眼下降。21例中,5例术后有不同程度复视,复视均在3个月以内逐渐自行消失。结论:经鼻内镜眶内、下壁部分切除术治疗恶性突眼具有视野清晰、手术精确、创伤小、并发症少的优点,是治疗甲亢恶性突眼的有效方法。     

内镜下治疗鼻源性视觉障碍的临床研究

目的 探讨鼻源性视觉障碍性疾病的诊断与治疗模式.方法 回顾性分析23例(25眼)资料完整的鼻眼相关视功能障碍病例,23例均行内镜下鼻腔鼻窦探查+鼻窦开放术,其中9例行视神经管减压术.结果 双侧全组鼻窦炎4例,单侧后组筛窦、蝶窦炎6例,额窦、筛窦炎1例,孤立性蝶窦炎5例,单侧后组筛窦、蝶窦真菌病5例,单侧蝶窦、筛囊肿或脓囊肿2例,均经术后病理证实.术前视功能:2例(2眼)无光感;6例(7眼)眼前手动;7例(7眼)眼前指数(＜ 20 cm);8例(9眼)有不同程度视力下降.1例次(1眼)眼球突出、直接和间接瞳孔对光反射消失;3例次(3眼)复视;2例次(2眼)外展麻痹;3例次(3眼)视野缺损(1眼中央性,2眼颞侧);1例次(1眼)上睑下垂.全部病例术后鼻窦术腔上皮化.术后视功能:2眼无改善;10眼恢复到发病前水平;13眼由术前眼前手动、指数改善到眼前指数(30～60 cm).其他眼部症状消失.结论鼻源性视觉障碍患者出现视力障碍时,若药物保守治疗无效应及早行鼻内镜下鼻腔鼻窦探查术;对严重视力障碍、视力急剧下降患者及早实施视神经减压手术,可以有效改善患者的视功能.     

内镜下经筛径路眶内侧壁减压联合脂肪减压术治疗Graves眼病

目的 探讨内镜下经筛径路眶内侧壁减压术联合内镜下经筛径路眶肌锥内脂肪减压术治疗Graves眼病(Graves' ophthalmopathy,GO)的可行性,并分析其疗效.方法 对2006年10月至2011年5月因并发眶尖拥挤视神经病变而接受眶减压手术的29例GO患者进行回顾性分析.所有患者术前确诊为非组织活动期,均因视力下降、视野缺损或色觉障碍,同时合并眼球突出而接受内镜下经筛径路眶内侧壁减压术联合肌锥内眶脂肪减压术,术后定期随访.根据术后9个月视力、色觉改善程度,以及眼球突出度矫正度、复视等并发症判断疗效.结果 共收集资料齐全的GO患者29例(45眼).术后9个月,44眼(97.8％)视力明显改善,视力从术前((x)±s,下同)的-0.65±0.30提高至-0.24±0.22,视力平均提高达0.55 ±0.17,手术前后比较差异有统计学意义(t=- 13.012,p＜0.001);29眼术前色觉障碍者,23眼(79.3％)术后明显改善;术后双眼眼球对称度达100％,手术前后比较,平均眼球突出矫正度达(7.07±1.59) mm(4～11 mm).术后所有病例双眼眼球突出度相差＜2 mm,除1例术后复视加重外,术后无一例新发复视、视力下降、眶内出血等并发症发生.结论内镜下经筛径路眶内侧壁减压术联合肌锥内眶脂肪减压术在实现眶尖部减压的同时可以达到有效矫正眼球突出度的效果,且具有微创,无颜面部瘢痕,术后复视、眼球移位等发生率极低的优点,该术式是治疗GO并发眶尖拥挤视神经病变患者的安全有效的手段之一.     

鼻内镜鼻窦手术眼部并发症及其处理对策

目的 探讨鼻内镜鼻窦手术的眼部并发症可能的原因及处理经验,以期引起鼻内镜外科医生的重视.方法 收集作者收治的具有比较典型特征的鼻窦手术眼部并发症者22例8类.损伤类型分别为:纸样板损伤、眶内感染、额筛阻塞性囊肿、泪道损伤、眼外肌损伤、眶内出血、视神经损伤、眼底动脉栓塞等,并给予了相应处理.结果 单纯纸样板损伤9例中8例经保守治疗痊愈,眶纸样板损伤伴眶骨膜下感染1例和泪道损伤、额筛阻塞性囊肿各1例经鼻内镜手术痊愈.眼外肌损伤2例中1例经眼肌矫正术后除向健侧有轻微复视外,其他眼位无明显复视;另1例经眼肌矫正后仍有轻度复视.眶纸样板损伤致眶内出血1例痊愈,另1例眶内出血和1例眼底动脉栓塞导致的视力丧失无改善.视神经损伤6例(7侧)中1例(1侧)经视神经减压+眶尖减压视力恢复正常,另1侧及其余5例(5侧)无改善.结论 鼻内镜手术导致视神经损伤、眶内出血和眼底动脉栓塞导致的失明,治疗困难,预后极差;如果有残存视力,预后较好.     

眶平衡减压术相关解剖及临床应用的研究

目的通过眶外侧壁应用解剖研究,探讨眶平衡减压手术的方法及疗效。方法对10具头颅骨眶外侧壁解剖观察及相关数据测量,临床应用眶平衡减压术治疗甲状腺相关眼病共3眼。结果涉及眶平衡减压术的眶外侧壁相关骨性结构有颧额缝、颧额蝶交点、眶下裂等结构,颧额蝶交点至眶下裂距离(外侧面)为(22.4±2.6)mm、眶缘至颧额蝶交点距离(眶面)为(15.6±4.0)mm、颧额缝至眶下缘距离为(22.2±3.4)mm。眶平衡减压术3眼,术后眼球回缩平均为6 mm,无术后并发症发生。结论掌握眶外侧壁解剖,眶平衡减压术手术安全、疗效确切。     

Medpor填充物经鼻内镜行眶内壁骨折复位术的临床应用

目的探讨在鼻内镜引导下经鼻腔入路应用Medpor修复眶内侧壁骨折的可行性。方法对20例单纯性眶内侧壁骨折患者应用Medpor填充复位并观察其疗效。结果术后随访6个月至2年，术后12眼未出现眼球内陷，无眼球运动障碍；6眼眼球内陷0．5～1．0mm，眼球向外运动障碍；2眼眼球内陷达1．5mm以上，有复视及眼球向外运动完全障碍。结论鼻内镜引导下经鼻腔入路应用Medpor为修复单纯的眼眶内侧壁骨折提供了一个安全可行的治疗方法。     

经鼻内窥镜眼眶减压术

甲状腺机能障碍眼眶病的眶减压术,传统用鼻外进路或经鼻窦减压。作者采用内窥镜直视下经鼻进路施行减压手术。手术在全麻下进行,局部加用局麻和血管收缩剂。先在鼻内窥镜下作蝶筛窦切除。暴露眶内壁、颅底及眶尖额筛隐窝区。于中鼻道作窦切开,前到鼻泪管后缘、下至下鼻甲根部,后达鼻窦后缘,认清眶底处眶下神经。用一角刮匙、钝神经钩或细     

下鼻甲粘膜下凝固术对鼻气道阻力的影响

目的 :观察下鼻甲粘膜下凝固术对鼻气道阻力的影响。方法 :应用主动性前鼻测压法 ,测定 17例慢性鼻炎患者 ,行下鼻甲粘膜下凝固术前后鼻气道阻力和主观鼻开放感觉评分情况。结果 :鼻炎组 17例患者术前鼻气道阻力是 (0 .6 6 7± 0 .2 1) k Pa· s/ L;术后 3个月 (0 .30 2± 0 .17) k Pa· s/ L,10个月 (0 .397± 0 .2 5 ) k Pa· s/ L,统计学显示术后两者和术前的差异有极其显著性意义 (P <0 .0 1)。术前主观鼻开放感觉评分是 7.5± 1.5 ,术后 3个月 2± 2 .0 ,10个月 3± 2 .5 ,两者和术前相比差异亦有极显著性意义 (P <0 .0 1)。结论 :下鼻甲粘膜下凝固术可显著性地降低患者的鼻气道阻力 ,同时可明显的改善患者的主观鼻开放感觉。     

A Decrease in Maxillary Sinus Pressure,as Seen in Upper Airway Allergy or Infection,Results in an Increase in Upper Airway Nitric Oxide Levels

The paranasal sinuses are connected to the nasal cavity via small osties. Ostial occlusion, caused by mucosal swelling, will result in a slowly increasing negative pressure inside the sinus cavity. In parallel, the oxygen content in the sinus will decrease, resulting in the development of relative hypoxia. Hypoxia is a powerful inducer of nitric oxide (NO) synthase, and inducible NO synthase has been shown to be present in considerable amounts in the upper airways, including the sinuses. The present study was designed to investigate whether a reduction in sinus pressure would affect upper airway NO production. Thirteen healthy volunteers were investigated. A pressure chamber was used to lower the ambient pressure to-4.9 kPa. NO was sampled from one nostril or via a drainage tube inserted into the maxillary sinus before, during and after the hypobaric exposure. When the pressure was decreased, NO levels increased from 256 &#45 15 to 316 &#45 19 ppb ( n =13, p <0.001). The NO levels remained elevated (282 &#45 21 ppb; p <0.05) when measurements were repeated 20 min after leaving the chamber. The nasal airway resistance (V2 tot ) also increased as a result of the chamber session (from 16 &#45 2° before to 21 &#45 3° after; p <0.05). An increase in NO levels was also found when the experiments were repeated with NO sampled directly from the maxillary sinus (225 &#45 6 before and 265 &#45 9 ppb after; n =6, p <0.001). For control purposes the nasal analyses were repeated again, this time under hyperbaric conditions (+4.9 kPa). This resulted in a slight decrease in the NO levels (from 273 &#45 22 to 241 &#45 17 ppb; n =10, p <0.001), but there was no change in the nasal airway resistance. We conclude that a reduction in sinus pressure, as seen in upper airway allergy or infection, may result in an increase in upper airway NO production.     

One‐stop neck lump clinic: phase 2 of audit. How are we doing?

One‐stop neck lump clinic: phase 2 of audit. How are we doing? Regular monitoring and audit of a service are integral to ensuring maintenance of efficiency and standards. This is particularly important where the quality of the service is operator dependent, as is the case in the clinical diagnosis of neck lumps and fine needle aspiration cytology. The one‐stop neck lump clinic has now been running in the department for more than 20 months. A previous article described the results of the first phase audit carried out at 6 months and had identified a waiting time to be seen that was longer than that recommended by the British Association of Otorhinolaryngologists, Head and Neck Surgeons. Measures were implemented to reduce this waiting time and a second audit was carried out after another 10 months with the aims of assessing if modification of the means of referral reduces waiting time and if the outcomes of clinical performance in phase 1 could be maintained or improved. We discuss the results of phase 2 in the audit spiral.     

The expression of vascular endothelial growth factor (VEGF) and VEGF‐C in early laryngeal cancer: relationship with radioresistance

The expression of vascular endothelial growth factor (VEGF) and VEGF‐C in early laryngeal cancer: relationship with radioresistance Angiogenesis is essential for tumour growth and invasion. Vascular endothelial growth factor (VEGF) is a prime mediator of tumour angiogenesis. VEGF‐C is a closely related protein that effects lymphatic endothelial cells and may be important in the process of lymphatic metastasis. The purpose of this study was to evaluate the expression of these cytokines in patients with T1 and T2a glottic, squamous cell carcinoma, in comparison with normal epithelial control tissue, to ascertain any association with radioresistance. Twenty‐two tumours treated by radiotherapy (13 radiosensitive, nine radioresistant) and seven normal control tissues were studied. The minimum follow‐up was 2 years after radiotherapy. Expression of VEGF and VEGF‐C was evaluated by immunohistochemistry of formalin‐fixed, paraffin‐embedded biopsy specimens. Analysis was carried out using a quantitative computer image analyser. Both VEGF and VEGF‐C were detectable in tumour and normal control specimens. There was increased expression in tumour specimens of both VEGF (P = 0.03) and VEGF‐C (P < 0.001). In addition, the expression of VEGF‐C was associated with tumours of higher histological grade (P = 0.021). There was, however, no difference in VEGF and VEGF‐C expression between radioresistant and radiosensitive tumours. The expression of VEGF and VEGF‐C is increased in early laryngeal squamous cell carcinoma (SCC). However, measuring the expression of these proteins cannot predict radioresistance in this tumour group.     

Treatment of Maxillary Sinus Carcinoma: Clinical Results Using the Kitasato Modality

The conventional therapeutic regimen for maxillary sinus carcinoma consists of dissection of the maxilla, full-dose irradiation and extensive chemotherapy. However, the results obtained with this treatment are often poor. Even when patients recover, their quality of life is significantly reduced as a result of deformity of facial structures and swallowing and articulation dysfunctions. A retrospective analysis of 68 patients with maxillary sinus carcinoma treated with the Kitasato modality between 1975 and 1999 was conducted. All patients underwent pergingival maxillary sinus surgery combined with pre- and postoperative irradiation therapy with standardized total doses of 16 Gy; the postoperative irradiation was given in combination with regional intra-arterial infusion chemotherapy administered via the superficial temporal artery. All visible tumor lesions were removed where possible in order to preserve or facilitate cellular immunity after surgery. The cumulative 5-year survival rates were 85.7% for Stage II patients, 88.1% for Stage III, 76.6% for Stage IVA and 75.0% for Stage IVB.     

Cervical Reflex Induced by Click Stimuli in Cats

We studied click-evoked potentials in the anterior horn of the spinal cord in 17 cats. A concentric needle electrode was inserted into the anterior horn of the spinal cord at levels C3-C6. Potentials evoked with 105 dB SPL clicks were recorded with a peak latency of 4.89-5.10 ms only at the C3 level. These responses were observed 45-60 dB SPL above the auditory brainstem response (ABR) threshold, and no potentials were evoked by stimulation of the contralateral ear. Average was performed 100 times with changes in stimulation frequency of 1-20 Hz. The amplitude of the potentials decreased with increasing stimulus frequency, but there were no changes in ABRs. The responses disappeared after destruction of the medial vestibulospinal tract at the obex level, but ABRs were still recorded. The spinal nucleus of the accessory nerves was located in the anterior horn of the spinal cord at levels C1-C6, and the sternocleidomastoid muscle motoneurons were found at levels C1-C3. The click-evoked potentials recorded in this study reflect responses of the spinal nucleus of accessory nerves through the vestibulospinal tract to click stimulation. The responses have the same characteristics as vestibular-evoked myogenic potentials that can be recorded using surface electrodes over the sternocleidomastoid muscles of humans.     

A simple objective evaluation and grading for facial paralysis outcomes

Matrix metalloproteinase (MMP)-2 and -9 degrade type IV collagen, which is one of the major components of the basement membrane in normal tissue and expressed in the surroundings of the cancer nest in squamous cell carinoma. The degeneration of type IV collagen is an essential step in the metastasis to lymph nodes and distant organs. In this study, we examined MMP-2 and -9 levels of cancer tissue and serum obtained from patients with head and neck squamous cell carcinoma (HNSCC) in order to evaluate the relationship between the clinicopathologic features and MMPs. We examined the production of MMP-2 and -9 in cancer tissue homogenates of 73 patients who had HNSCC and the serum MMP levels of 16 patients with HNSCC and 8 healthy volunteers. We also studied the localization of MMP-2 in the carcinoma using an immunohistochemical approach. The concentrations of MMP-2 and -9 in the tissue homogenates and serum were measured by means of a sandwich enzyme immunoassay using a monoclonal antibody. Immunohistochemical analyses were performed with monoclonal antibody to MMP-2. The concentration of MMP-2 in the tumor tissue homogenates was unrelated to tumor size, but that in patients with lymph node metastases was significantly higher than in those without lymph node metastases. The concentration of MMP-9 was unrelated to lymph node metastasis and tumor size. The levels of both MMP-2 and -9 in serum were unrelated to lymph node metastasis. Immunohistochemistry indicated that MMP-2 was mainly expressed in cancer cells. Because MMP-2 degrades type IV collagen, the level of MMP-2 in carcinomas may be a useful indicator of the degree of invasion and metastasis.     

A case of cortical deafness and anarthria

The nasal epithelium protects the underlying tissue from damage. Epithelial cell growth is controlled by epidermal growth factor (EGF) and is possibly affected by toxic proteins, e.g. eosinophil cationic protein (ECP). The aims of this study were to examine nasal fluid epithelial cell counts and their relations to EGF, eosinophils and ECP in 23 patients with seasonal allergic rhinitis and 20 healthy controls. Nasal fluid epithelial cell counts were lower in patients than in controls. EGF levels did not differ between patients and controls, and correlated with epithelial cell counts in controls but not in patients. Eosinophils and ECP were higher in patients than in controls, but did not correlate with epithelial cell counts. The role of growth factors, such as EGF, in regulating epithelial cells merits further study.     

Tongue Base Reduction with Temperature-controlled Radiofrequency Volumetric Tissue Reduction for Treatment of Obstructive Sleep Apnea Syndrome

In recent years a considerable effort has been made to establish the use of different surgical techniques for the treatment of obstructive sleep apnea syndrome (OSAS). Nevertheless, treatment of hypopharyngeal obstruction due to tongue base hypertrophy remains in many ways an unsolved problem. The aim of this study was to evaluate the safety and efficacy of tongue base reduction with temperature-controlled radiofrequency volumetric tissue reduction in the treatment of OSAS. Twenty patients with OSAS and tongue base hypertrophy were treated with radiofrequency tissue ablation. An intensified treatment protocol was used, delivering 2,800 J per treatment session under local anesthesia. Two nights of polysomnography testing were performed before and after treatment. Daytime sleepiness, snoring and postoperative morbidity were assessed using questionnaires. Mean respiratory disturbance index (RDI) was reduced from 32.1 to 24.9/h after a mean of 3.4 treatment sessions. Six patients (33%) were cured after the procedure (reduction in RDI of &#83 50% and a postoperative RDI of <15/h) and ten (55%) showed an improvement of >20% in their RDI. Daytime sleepiness and snoring improved significantly. Peri- and postoperative morbidity was low; one severe complication occurred (tongue base abscess). We were able to achieve similar cure and responder rates to those reported in a recently published pilot study but with a reduced number of treatment sessions. We believe that this technique may improve patient acceptance and have beneficial cost implications.     

Bilateral versus unilateral cochlear implantation in young children

Objectives

To compare the preverbal communication skills of two groups of young implanted children: those with unilateral implantation and those with bilateral implantation.

Material and methods

The study assessed 69 children: 42 unilaterally and 27 bilaterally implanted with age at implantation less than 3 years. The preverbal skills of these children were measured before and 1 year after implantation, using Tait Video Analysis that has been found able to predict later speech outcomes in young implanted children.

Results

Before implantation there was no significant difference between the unilateral group and the bilateral group. There was still no difference at 12 months following implantation where vocal autonomy is concerned, but a strongly significant difference between the groups for vocal turn-taking and non-looking vocal turns, the bilateral group outperforming the unilateral group. Regarding gestural turn-taking and gestural autonomy, there was a strongly significant difference between the two groups at the 12 month interval, and also a difference before implantation for gestural autonomy, the unilateral group having the higher scores. Multiple regression of non-looking vocal turns revealed that 1 year following implantation, bilateral implantation contributed to 51% of the variance (p < 0.0001), after controlling for the influence of age at implantation and length of deafness which did not reach statistical significance.

Conclusions

Profoundly deaf bilaterally implanted children are significantly more likely to use vocalisation to communicate, and to use audition when interacting vocally with an adult, compared with unilaterally implanted children. These results are independent of age at implantation and length of deafness.     

Autoimmunity in Sudden Sensorineural Hearing Loss: Possible Role of Anti-endothelial Cell Autoantibodies

In order to verify whether anti-endothelial cell autoantibodies (AECAs) can be used as serological markers of inner ear vasculitis in sudden sensorineural hearing loss (SSHL), 32 patients affected by idiopathic SSHL were investigated. All patients underwent a routine general physical examination and extensive audiovestibular, microbiological and immunological investigations. Fourteen normal subjects without a history of HL, autoimmune or metabolic disease served as controls. Detection of AECAs was performed using an indirect immunofluorescence technique. AECA-positive patients were treated with methylprednisone, while AECA-negative patients were treated with a combined regimen of steroids, plasma expander and aspirin. The average hearing recovery for 5 frequencies (0.25-4 kHz) was analyzed in each subject 1 month after treatment and every 3 months thereafter; median follow-up was 12 months (range 9-18 months). A total of 15/32 patients (46.8%; 11/19 females, 4/13 males) were AECA-positive and thus differed significantly from the normal population in whom only 2/14 tested cases were positive ( p =0.03). Severe hearing loss was associated with being AECA-positive in 8/11 cases. During follow-up, 25/32 patients improved their hearing and 17 of these patients were AECA-negative. The seven cases without hearing improvement were all AECA-positive. In patients with SSHL, immune-mediated vascular damage may have a pathogenetic role and AECAs may represent a serological marker of vasculitis even if they are not inner ear-specific and even if they represent an epi-phenomenon rather than the only cause of SSHL.