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Search Results: 1 - 10 of 6016 matches for " transoral laser microsurgery "
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Transoral Endoscopic CO2 Laser Microsurgery for Early Laryngeal Cancers
Li-Jen Hsin,Tuan-Jen Fang,Kai-Ping Chang,Ku-Hao Fang
Chang Gung Medical Journal , 2009,
Abstract: Background: The impact of transoral endoscopic CO2 laser microsurgery (TLM) for thetreatment of Tis, T1, and T2 glottic cancer on local disease control, survival,and laryngeal preservation was investigated.Methods: From October 1999 to Feburary 2008, 48 patients with a previously untreatedearly laryngeal malignant tumor who had been treated with TLM wereenrolled in this study. Overall survival, primary and ultimate local control,and larynx preservation rates were calculated by the Kaplan-Meier method.The impact of anterior commissure involvement on the local control rateafter primary TLM was performed was analyzed by the log-rank test.Functional results for postoperative voice were analyzed by patient telephoneintelligibility.Results: The overall 5-year survival rate was 97% (95% CI, 94%-100%), the primary5-year local control rate was 72% (95% CI, 66%-92%), the local control rateexclusively for TLM was 85% (95% CI, 79%-99%), and the ultimate 5-yearlocal control rate was 100%. Larynx preservation rate was 97% (95% CI,94%-100%). Anterior commissure involvement in glottic cancer showed nostatistically significant difference in primary local control rate (p = 0.9).Regarding the post-operative voice function, 47 patients (97.9%) were ableto maintain adequate telephone intelligibility.Conclusion: In terms of long-term survival and locoregional control, TLM is an optimalprimary treatment modality for early laryngeal cancer. With TLM treatment,involvement of the anterior commissure is not a poor prognostic indicator.
Functional organ preservation in laryngeal and hypopharyngeal cancer []
Ambrosch, Petra,Fazel, Asita
GMS Current Topics in Otorhinolaryngology, Head and Neck Surgery , 2012, DOI: 10.3205/cto000075
Abstract: [english] The principles of open versus laser microsurgical approaches for partial resections of the larynx are described, oncologic as well as functional results discussed and corresponding outcomes following primary radiotherapy are opposed. Over the last decade, the endoscopic partial resection of the larynx has developed to an accepted approach in the treatment of early glottic and supraglottic carcinomas thus leading to a remarkable decline in the use of open surgery. Comparing the various surgical approaches of laryngeal partial resections, the oncological outcome of the patients, as far as survival and organ preservation are concerned, are comparable, whereas functional results of the endoscopic procedures are superior with less morbidity. The surgical procedures put together, are all superior to radiotherapy concerning organ preservation. Transoral laser microsurgery has been used successfully for vocal cord carcinomas with impaired mobility or fixation of the vocal cord, supraglottic carcinomas with infiltration of the pre- and/or paraglottic space as well as for selected hypopharyngeal carcinomas. It has been well documented that laser microsurgery achieves good oncological as well as functional results with reasonable morbidity. However, patients with those tumours have been successfully treated by open partial resections of the larynx at medical centres with appropriate expertise. The initially enthusiastic assessment of study results concerning the efficacy of various protocols of chemoradiation with the intent of organ preservation for laryngeal and hypopharyngeal carcinomas are judged more cautious, today, due to recent reports of rather high rates of late toxicity complications.
Microcirugía transoral láser en cáncer de laringe: Experiencia en el Complejo Asistencial Barros Luco. 2003-2009
Arregui V,Rodrigo; Ortúzar G,Esteban; Calabrese,Rocco;
Revista de otorrinolaringología y cirugía de cabeza y cuello , 2011, DOI: 10.4067/S0718-48162011000100002
Abstract: introduction: laryngeal cancer is the second most common malignancy in head and neck, and there are several treatment options for their management, wherein the use of lasers for early stages. aim: to evaluate the oncological results of patients with a diagnosis of laringeal cancer, they were treated by transoral laser microsurgery at hospital barros luco. material and method: retrospective study of 30 medical records of patients operated at the barros luco hospital from 2003 to 2009. results: for patients with t1 tumor overall survival (adjusted) initial and final local control of 100%% was obtained. in t2 patients overall survival was 100%% with an initial and final local control of 81.8%. patients t3 described a 100% overall survival but without achieving local control and final control in none of the patients. discussion: cancer control results obtained in our service for early stages are similar to those described in the literature. conclusions: transoral laser surgery is a safe procedure with acceptable oncological outcomes in management of patients with neoplastic disease of the larynx in early stages.
Comparision of Transoral Laser and Open Partial Laryngectomy for T1 and T2 Glottic Cancer: A Review of literature.
Namit Kant Singh
International Journal of Biomedical and Advance Research , 2012, DOI: 10.7439/ijbar.v3i11.720
Abstract: T1–T2 glottic carcinomas may be treated with conservative surgery or radiotherapy. The goals of treatment are cure and laryngeal voice preservation. The aim of the current study was to review the literature and discuss the optimal management of T1 and T2 glottic carcinoma. Literature review indicated that the local control, laryngeal preservation, and survival rates of patients were similar after transoral laser resection and open partial laryngectomy. Voice quality depended on the extent of resection for patients undergoing surgery; results for patients undergoing laser resection for limited lesions showed better Voice Handicap Index scores, whereas open partial laryngectomy yielded poorer results. The cost of treatment was more for open partial laryngectomy. Patients with well defined lesions suitable for transoral laser excision with a good functional outcome were treated with laser. Open partial laryngectomy was reserved for patients with locally recurrent tumors. This review has been conducted by analyzing the Data which has been displayed in Pubmed literature in the last 25 years on the topics of Transoral Laser and Open partial Laryngectomy in the management of T1 and T2 glottic cancer. The various original articles and review articles were analyzed and compared and a conclusion derived.
Thornwaldt Cyst: Case Report  [PDF]
Kiran L. Kulsange, Smita Nagle, Mohan Jagade, Pallavi Gupta, Madhavi Pandhare, Kartik Parelkar, Arpita Singhal, Devkumar Rangaraja, Reshma Hanwate, Nataraj Rajanala Venkata, Bandu Nagrale, Ankur Walli, Karthik Rao, Sudam Gaware
International Journal of Otolaryngology and Head & Neck Surgery (IJOHNS) , 2016, DOI: 10.4236/ijohns.2016.55032
Abstract: Thornwaldt cyst is benign, mucosal congenital cyst which is located in upper nasopharynx. It developed in nasopharyngeal bursa if opening of bursa is occluded due to infection or inflammation. It is rare congenital cyst present in nasopharyngeal bursa. Its incidence is 3% in adults [1]. The usual age of presentation is 2nd and 3rd decade [1]. It is usually asymptomatic and incidental finding on MRI but it can present as nasal obstruction, post nasal drip, halitosis, occipital headache, foreign body sensation in throat [1] [2]. Here we are presenting a case report of 23 years old male presented with foreign body sensation in throat since 5 months. On oral and nasal endoscopic examination cystic mass in nasopharynx seen, bulging in oropharynx. MRI shows cystic mass arising from left side of nasopharynx popping up in oropharynx. Cyst then excised with diode laser with both endonasal and transoral approach with zero degree rigid endoscope. Histopathology confirmed the cyst as thornwaldt cyst.
Microcirugía transoral láser en cáncer de laringe: Experiencia en el Complejo Asistencial Barros Luco. 2003-2009 Transoral Laser Microsurgery of Cancer of the Larynx: Barros Luco Medical Center. Experience 2003-2009
Rodrigo Arregui V,Esteban Ortúzar G,Rocco Calabrese
Revista de Otorrinolaringología y Cirugía de Cabeza y Cuello , 2011,
Abstract: Introducción: El cáncer de laringe es la segunda neoplasia maligna más frecuente en cabeza y cuello, existiendo varias alternativas terapéuticas para su manejo entre las que destaca el uso de láser para los estadios tempranos. Objetivo: Evaluar los resultados oncológicos de los pacientes con diagnóstico de cáncer de laringe que se trataron mediante microcirugía transoral láser en el Hospital Barros Luco. Material y método: Estudio retrospectivo de 30 pacientes operados en el Hospital Barros Luco desde el a o 2003 al a o 2009. Resultados: Para los pacientes con tumor T1 se obtuvo una sobrevida global (ajustada), control local inicial y final de 100%. En los pacientes T2 se observó una sobrevida global de 100%% con un control local inicial y final de 81,8%%. Los pacientes T3 también describieron una sobrevida global de 100% pero sin lograr control local inicial y final en ninguno de los pacientes. Discusión: Los resultados de control oncológico obtenidos en nuestro Servicio para estadios tempranos son similares a lo descrito en la literatura. Conclusiones: La cirugía transoral láser es un procedimiento seguro y con resultados oncológicos aceptables para el manejo de pacientes con patología neoplásica de laringe en estadios tempranos. Introduction: Laryngeal cancer is the second most common malignancy in head and neck, and there are several treatment options for their management, wherein the use of lasers for early stages. Aim: To evaluate the oncological results of patients with a diagnosis of laringeal cancer, they were treated by transoral laser microsurgery at Hospital Barros Luco. Material and method: Retrospective study of 30 medical records of patients operated at the Barros Luco Hospital from 2003 to 2009. Results: For patients with T1 tumor overall survival (adjusted) initial and final local control of 100%% was obtained. In T2 patients overall survival was 100%% with an initial and final local control of 81.8%. Patients T3 described a 100% overall survival but without achieving local control and final control in none of the patients. Discussion: Cancer control results obtained in our service for early stages are similar to those described in the literature. Conclusions: Transoral laser surgery is a safe procedure with acceptable oncological outcomes in management of patients with neoplastic disease of the larynx in early stages.
Estudo comparativo histológico na prega vocal após incis?o com instrumental a frio e com laser de CO2 em modelo animal
Santos, Fernando C. C.;Grellet, Marcos;R. Junior, Aguilar;Jamur, Maria C.;Pinto, José A.;Fomin, Denilson S.;
Revista Brasileira de Otorrinolaringologia , 2003, DOI: 10.1590/S0034-72992003000600005
Abstract: among the several types of lasers employed in medicine today, the co2 is the most widely used in otorhinolaryngology and head and neck surgeries. the advantages of its use are: the reduction in bleeding, reduction in post-operative edema and the easy access to the operation site, among others. ever since jako and strong's works in 19721,2, when co2 was first applied in the treatment of papilomatosis and early glottic malign lesions, its indications have risen, most especially in benign lesions, due to new technology developed over the last years as, for example, the reduction of microspot and the super-pulse, reducing the thermal effects on the tissues. methods: in this work, incisions with cold steel instruments and 1watt continuous mode and super-pulse co2 laser were conducted on canine vocal folds. the amount of collagen deposited over the vocal folds was observed through histological exams using the sirius red method. results: the amount of collagen on the vocal folds was greater than the control group and statistically greater in the group of animals submitted to surgical procedures using cold instruments than procedures involving co2. there was no statistical difference between the control group and the group submitted to incisions with cold steel instruments. conclusions: the larynx surgery with co2 laser, when employed in low potency, with small microspot and super-pulse, is a safe method in relation to the collagen deposit when compared with cold blade instruments.
Application of contact laser in microsurgery of brain stem tumors
Jian-wen GU,Jun-hai ZHANG,Tao YANG,Yong-qin KUANG
Medical Journal of Chinese People's Liberation Army , 2011,
Abstract: Objective To explore the therapeutic efficacy of a new type sapphire contact laser using wavelength-shifting technique on microsurgery of brain stem tumors.Methods The clinical data were retrospectively analyzed of 23 patients(13 males and 10 females,aged 6 to 69 years with an average of 38 years,and the duration of disease was 14 to 36 months with average of 22 months) with brain stem tumor admitted from Mar.2006 to May 2010.The major symptoms of the patients were cranial nerve impairment,cerebellum function impairment or paralysis.All patients received microsurgical resection of brain stem tumor using sapphire contact laser through median suboccipital incision and posterior brain stem approach,and the tumors were resected with precision operation and vaporization and ablation.Results Of the 23 patients,4 were with glioma,15 with cavernous angioma,2 with angioreticuloma and 2 with metastatic tumor.Total resection was achieved in 15 cases,while subtotal resection(more than 80%) in 6 cases.Intraoperative hemorrhage was less and no intraoperative blood transfusion was required.A 6-months follow-up showed symptoms recovered in 15 patients,improved in 4,unchanged in 2,and worsen in 1.One patient died of recurrence of tumor.No postoperative intracranial infection was occurred,and 2 patients were undergone tracheotomy after operation.The average hospital stay was 15d.Conclusion The contact laser can precisely dissect and vaporize the tumors,increase the resection rate,reduce intraoperative hemorrhage and accessory injuries,and has a clear and definite effect.
Avalia??o da qualidade de corte do microcerátomo Masyk? na confec??o de lamela corneana pediculada em olhos humanos de Banco de Olhos
Victor, Gustavo;Alves, Milton Ruiz;Nosé, Walton;
Arquivos Brasileiros de Oftalmologia , 2006, DOI: 10.1590/S0004-27492006000400019
Abstract: purpose: to evaluate the cut quality of masyk? microkeratome in obtaining a corneal flap from human eyes of eye banks. methods: prospective study with 20 human eyes from eye banks. all flaps were programmed to obtain 160 μm thickness and 9.5 mm diameter. the thicknesses were calculated with p55 pachymeter (paradigm, usa), and diameter with compass. results: no complications were observed during the use of the microkeratome. the central corneal thickness average was 160.34±5.10 μm and range from 149 to 181 μm. the vertical diameter average was 9.64±0.16 mm and range from 9.30 to 9.85 mm. conclusion: masyk? microkeratome showed to be effective for obtention of corneal flap with appropriate thickness and diameter from human corneas of eye banks.
Avalia??o da qualidade de corte do microceratótomo Masyk? na confec??o de lamela corneana pediculada em olhos porcinos
Victor, Gustavo;Alves, Milton Ruiz;Nosé, Walton;
Arquivos Brasileiros de Oftalmologia , 2006, DOI: 10.1590/S0004-27492006000100002
Abstract: purpose: evaluation of the cut quality of the masyk? microkeratome in obtaining corneal flap from porcine eyes. methods: prospective study with 31 porcine eyes divided into two groups: 15 eyes with programmed flap thickness of 160 μm and 9.5 mm diameter (group 1), and 16 eyes with programmed flap thickness of 140 μm and 8.5 mm diameter (group 2). corneal thickness was calculated with a p55 pachymeter (paradigm, usa) and the diameter with compass. results: no complications were observed during the use of the microkeratome. in group 1, the central corneal thickness mean was 146.33 ± 15.43 μm, range between 127 and 186 μm, and the vertical diameter mean was 9.39 ± 0.26 mm, range from 8.90 to 9.85 mm. in group 2, the central corneal thickness mean was 128.75 ± 18.83 μm, range from 71 to 178 μm, and the vertical diameter mean was 8.27 ± 0.20 mm, range from 7.95 to 8.65 mm. conclusion: the masyk? microkeratome showed to be effective and safe to produce corneal flaps with appropriate thickness and diameter in porcine eyes.
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