鼻内镜下视神经管减压术治疗外伤性视力障碍14例报告

目的：探讨视神经管减压术治疗外伤性视力障碍的有效方法。方法：采用鼻内镜下视神经减压术治疗外伤性视力障碍患者14例。结果：随访3-18个月，其中8例有不同程度视力改善，6例无效。术后全部患者术腔上皮化，无并发症发生。结论：经鼻内镜筛蝶窦入路视神经减压术损伤较小，疗效确切，且不遗留面部瘢痕，容易为患者所接受。对伤后数天至1个月、大剂量激素治疗无效、视力损伤严重的患者，手术仍有可能挽救视力。     

鼻内镜下视神经减压术治疗视神经损伤

目的：探讨鼻内镜下视神经减压术治疗视神经损伤的疗效。方法：鼻内镜下自鼻腔经筛蝶窦行视神经管减压术治疗视神经外伤10例。结果：随访6个月～4年，术前视力无光感3例术后视力无改善，有残余视力7例术后视力均有不同程度的提高，无1例发生严重的并发症。结论：鼻内镜下视神经减压术创伤小，面部无切口疤痕，是治疗视神经损伤较好的方法，患者易接受。对有残余视力的患者要尽可能地手术治疗，对无光感者手术应慎重。     

视神经减压术治疗创伤性视神经病的疗效观察

目的 观察视神经减压术治疗创伤性视神经病的临床疗效.方法 30例创伤性视神经病患者,分别采用鼻外径路或经鼻内镜筛蝶窦径路施行视神经减压术,观察手术治疗的临床效果.结果 总有效率56.67%.术前无光感的16例中,6例术后视力显示一定程度的改善;术前有残余视力的14例中,11例的术后视力均有不同程度的提高.无1例发生严重并发症.结论 视神经减压术对创伤性视神经病导致的视力障碍,无论伤后时间长短和是否具有残余视力,均具有确切疗效.     

鼻外筛——蝶窦进路视神经管减压术

头面部创伤所致的视神经挫伤临床上以视神经管段损伤最为多见，本文对９例外伤性视神经挫伤病人进行鼻外筛－蝶窦进路视神经管减压术治疗，其中３例视力有所恢复，６例无效。作者认为对伤后视力下降者应作急症手术处理，以鼻外筛－蝶窦进路为最好，减压必须充分。     

外伤性视神经损伤的临床处理

目的 :观察经鼻外筛蝶窦径路行视神经减压术辅助药物治疗对外伤性视神经损伤的疗效。方法 :14例外伤性视神经损伤患者经鼻外筛蝶窦径路行视神经减压术的同时辅以大剂量激素及神经营养药物治疗。结果 :总有效率为 5 7.14% ,术中、术后无任何严重并发症 ;其中 2例伤后 8、11d手术 ,术后 6个月仍无光感。结论 :鼻外筛蝶窦径路行视神经减压术损伤较小 ,术野暴露充分 ,简易安全 ;同时辅以药物治疗 ,更有利于神经功能恢复。综合性治疗对外伤性失明患者是一种较好的措施。     

鼻内镜下视神经减压术治疗外伤性视神经病72例

目的 探讨视神经减压术治疗外伤性视神经病的疗效。方法 对大剂量糖皮质激素冲击治疗无效的外伤性视神经病患者72例（73眼），采用鼻内镜下视神经减压术治疗。外伤至手术时间1～57d，其中≤3d15例，4—7d37例，8—10d9例，11—15d5例，16～30d5例，〉30d1例。术前视力：光感以上18眼；无光感55眼。结果 术后随访3个月-5年。73眼中46眼视力有不同程度的提高，总有效率63．01％。原无光感的55眼中，31眼视力有提高，有效率56．36％。有光感以上视力的18眼中，15眼视力有提高，有效率83．33％。术后全部患者术腔上皮化，术中无并发症发生。结论 经鼻内镜筛蝶窦入路视神经减压术进路简捷，损伤较小、疗效确切，且不遗留面部瘢痕，容易为患者所接受。对伤后时间较长、大剂量激素治疗无效、视力损伤严重的患者，手术仍有挽救视力的可能。     

鼻内镜下视神经减压术治疗外伤性视力完全丧失的预后相关因素分析

目的探讨鼻内镜下视神经减压术对外伤性视力完全丧失的疗效,并评估其预后相关因素。方法回顾性分析85例外伤性视力完全丧失患者的临床资料,通过单因素分析和Logistic回归分析来评估其潜在的预后相关因素。结果鼻内镜下视神经减压术后,患者总体视力提高44．7％（38J85）。单因素分析显示：筛窦和（或）蝶窦内积血是视力改善的负性因素。而Logistic回归分析显示：外伤到手术的时间超过3d、筛窦和（或）蝶窦内积血与外伤性视力丧失的预后呈负性相关。结论筛窦和（或）蝶窦内积血、外伤到手术的时间超过3d是外伤性视力丧失视力恢复的危险因素。视力完全丧失的患者伤后3d内如能实施手术,视力可能得以较好改善。     

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.     

经鼻内镜下视神经减压术39例报告

目的：探讨经鼻内镜下视神经减压术治疗管段视神经损伤的可行性,技巧及优点。方法：回顾性分析39例视神经损伤的病例,伤后2-18d行手术治疗,采用鼻内镜下经鼻视神经减压术,经筛窦或蝶窦自然开口进入蝶窦,寻找视神经管及骨折部位,去除骨管周壁的1.3-1.2,切开视神经鞘膜,明胶海绵及凡士林纱条填塞鼻腔,术后给予药物,高压氧治疗。结果：随访至少3个月,39例患者（40眼）中,5例失访,术后视力发送的总效率为52.5%(21-40）。受伤至手术的时间间隔2-7d手术者,术后视力改善的有效率为58.6%(17-29);7-18d手术者,术后视力改善的有效率为36.1%(4-11)。视力恢复期约2个月。结论：经鼻内镜下视神经减压术具有视野清晰,无需开颅,侵袭性小,头面部不遗留瘢痕,并发症少等优点。手术恢复的程度与视神经损伤的程度,手术时间的选择及手术技巧等因素相关。     

视神经损伤行筛、蝶窦径路减压术的临床观察

目的探讨提高视神经管内段损伤疗效的方法.方法经筛、蝶窦径路减压术治疗16例视神经损伤,全程松解视神经.结果术后随访患者6个月,9例患者视力有不同程度的改善,7例无效,无并发症发生.结论筛、蝶窦径路视神经减压术视野宽,便于操作且解剖标志清,容易定位,更加安全,尤其适合筛、蝶窦发育不良,骨质增生者.     

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.     

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.     

Congenital nasal masses: diagnosis and management

One hundred and nine congenital nasal masses which presented to two children's hospitals over a 20 year period are reviewed. The diagnosis of the nasal mass is discussed with respect to age, mode of presentation, and site of the lesion, and a management protocol is advocated.     

Reverse Optokinetic After-nystagmus Generated by Gaze Fixation During Optokinetic Stimulation

Gaze fixation during optokinetic stimulation generates an after-nystagmus with a slow component towards the reverse direction of the optokinetic stimulation. The duration and maximum slow component velocity (SCV) of this "reverse OKAN" were observed by changing the duration, velocity and direction of the optokinetic stimulation in nine normal volunteers. The duration of reverse OKAN increased with increasing stimulation time but was unaffected by changes in the stimulation velocity. The maximum SCV of reverse OKAN decreased with an increase in the stimulation velocity but was not significantly affected by changes in the optokinetic stimulation time. There was no directional difference among the horizontal, upwards and downwards reverse OKANs. The reverse OKAN was thought to be generated by a mechanism different from the velocity storage mechanism which produced optokinetic nystagmus and the first phase of OKAN. Retinal slip during the optokinetic stimulation was considered to be an input to the mechanism which generated the reverse OKAN. We hypothesize that the mechanism causing the reverse OKAN may be a generator of the second phase of OKAN, which was also intimately connected with self-motion sensation during the optokinetic stimulation.     

Tissue-engineered human nasal septal cartilage using the alginate-recovered-chondrocyte method

OBJECTIVES: Tissue engineering of nasal septal cartilage has numerous potential applications in craniofacial reconstruction. Chondrocytes suspended in alginate gel have been shown to produce a substantial cell-associated matrix. The objective of this study was to determine whether cartilage tissue could be generated using the alginate-recovered-chondrocyte (ARC) method, in which chondrocytes are cultured in alginate as an intermediate step in tissue fabrication. METHODS: Nasal septal chondrocytes from five patient donors were isolated by enzymatic digestion, then expanded in monolayer culture. At confluency, a portion of those cells were seeded at high density onto a semipermeable membrane and cultured for 14, 21, or 28 days (monolayer group). The remaining cells were suspended in alginate and cultured until a cell-associated matrix was observed (10-17 days). Cells and their associated matrix were released from alginate (ARC group), seeded onto a semipermeable membrane, and cultured as already described. DNA (Hoechst 33258 Assay), glycosaminoglycan (GAG; dimethylmethylene blue assay), and collagen (hydroxyproline assay) were analyzed biochemically. Immunohistochemistry was performed to assess expression of collagens type I and type II. Histochemistry was performed to localize cells accumulating sulfated GAG (Alcian blue stain). RESULTS: The ARC constructs, in contrast to the monolayer constructs, had substantial structural stability and the histologic and gross appearance of cartilaginous tissue. ARC constructs demonstrated significantly greater GAG and collagen accumulation than monolayer constructs (P <.05). Histologic analysis revealed substantial GAG and collagen type II production and only moderate collagen type I production. The composition of the matrix was thus similar to that of native human septal cartilage. CONCLUSIONS: Tissue-engineered human nasal septal cartilage using the ARC method has the histologic and gross appearance of native cartilage and has biochemical composition more like that of native cartilage than monolayer constructs. This is the first report of human nasal septal neocartilage formation without the use of biodegradable scaffolds.     

Jaw osteosarcomas

Introduction

Osteosarcoma (OS) is the most frequent bone malignant tumor. It is usually found on long bones, 5 to 10% are located on jaws, accounting for 0.5 to 1% of all facial tumors. There is little published data which concerns only few patients. Our aim was to study retrospectively cases of facial bone OS in adults, and to compare our results with published data to suggest an optimal management scheme.

Patients and method

Thirty-three patients were managed for an OS, from January 1997 to January 2007. Fourteen patients with a maxillary and mandibular OS, treated in first-intention in our unit, were included. The following data were analyzed: age; personal history; circumstance of discovery; clinical, functional, and physical signs; loco-regional extension and metastasis radiological investigation. The histological slides were systematically reviewed. The protocol, therapeutic outcome, and follow-up were studied.

Results

The mean age at diagnosis was 43. Swelling was the most frequent functional sign. The mean delay before management was 3.4 months. The most frequent radiological presentation was a lytic and hyperdense image. The diagnosis was suggested after CT scan in 57.1% of cases. The biopsy was correlated to the anatomopathological analysis in 78.6% of cases. The most common treatment was surgical exeresis completed by chemotherapy. The 5-year survival rate was 50%.

Discussion

Jaw OS are specific because of their localization and specific bone ultrastructure. Their management remains controversial: should they be managed like limb OS or treated more specifically? Neoadjuvant chemotherapy, even if it delays exeresis for 3 months, seems to stop the growth or reduce the tumor. An early anatomopathological analysis of the surgical piece determines adjuvant therapy. The negative prognostic factors are: maxillary localization because of limited exeresis margins, tumoral size, and osteoblastic sub-type.     

Patterns of practice regarding surgical site infection prevention in head & neck surgery: An international survey

IntroductionHead & neck surgery encompasses a variety of surgical approaches for benign and malignant conditions. Due to the complexity in treating patients with head and neck pathology, it is necessary to adhere to basic surgical principles to decrease complications. Among them, surgical site infection can be prevented using a surgery quality protocol including the correct use of antibiotics and optimization of nutritional status.Materials and methodsA survey was sent through the YO-IFOS and SEORL-CCC international mailing list.ResultsA total of 435 surgeons completed the survey. Of the respondents, 97.7% confirm that they scrub their hands before surgery, 40.9% respondents recommend nutritional support according to sign and symptoms, 60.9% use of antibiotic prophylaxis in clean surgery and just 9.2% use clindamycin in combination.ConclusionThis survey has broadened the scope regarding H&N surgical safety around the globe. Identifying innovative ways in which surgical care may be improved is mandatory.