Transoral robotic surgery: Establishment of a programme in Hong Kong

Aim: To establish a transoral robotic surgery (TORS) programme for the surgical management of head and neck pathology including oropharyngeal lesions, and to carry out a TORS tonsillectomy. Methods: Training for otolaryngologists was planned and undertaken. Off‐site robotic training of otolaryngologists was conducted by a robotic company trainer. Visits to established international TORS programmes were made. A suitable patient was identified with the intention of undergoing a TORS tonsillectomy and evaluating the outcome. Results: A patient successfully underwent a transoral robotic surgery tonsillectomy using a surgical robot system without intraoperative or postoperative complications or sequelae. Conclusions: A transoral robotic surgery programme, including training for otorhinolaryngologists, has been established. A tonsillectomy, a feasible procedure easily carried out, was done using a surgical robot system without complications.     

Transoral robot-assisted excision of a lingual thyroid gland

Lingual thyroid is a rare condition in which ectopic thyroid tissue is present in the base of tongue. We present a case of a 46-year-old patient with a symptomatic lingual thyroid that was successfully removed with minimal morbidity using transoral robotic surgery. The traditional treatment algorithm for lingual thyroid is reviewed. The advantages of using transoral robotic surgery to remove lingual thyroid tissue are described along with the reasons why the addition of this technique should shift treatment of lingual thyroid towards more frequent use of surgical ablation. This report is, to our knowledge, the first describing the use of transoral robotic surgery for treating lingual thyroid.     

Initial Multi-institutional Experience with Transoral Robotic Surgery

Objective To assess the initial experience for transoral robotic surgery (TORS), as observed in the French TORS group. Study Design A multi-institutional prospective cohort study. Setting Seven tertiary referral centers. Subjects and Methods One hundred thirty consecutive patients who were scheduled for a TORS between October 2008 and March 2011 were included. The operative times, conversion rates, morbidity, and alternatives were described. The serious adverse effects encountered were analyzed, and recommendations for avoiding them are specified. Results Most of the patients (65%) had a laryngeal (supraglottic) and/or hypopharyngeal resection. Thirty-nine of the 130 patients receiving TORS would have had a transoral laser resection as their alternative surgery. The tumor exposure was suboptimal in 26% of the cases. Six of the 130 patients needed conversion to an open approach. There were 15 postoperative hemorrhages and 2 deaths due to posthemorrhage complications in patients with significant comorbidities at 9 and 18 days after the surgery. The median setup and procedure times were 52 ± 46 and 90 ± 92 minutes, respectively. The learning curve was characterized by better selection and management of potential patients. Conclusion The visualization offered by the robotic assistance allowed transoral resections of tumors that were difficult to resect or unresectable by laser surgery. Self-assessment of surgical exposure and a decrease in the need to convert to an open procedure over time suggested improvement in TORS-related surgical skills. Nevertheless, strict patient selection is essential. Even with a minimally invasive approach, some patients will need a tracheostomy for safety reasons.     

Robot-assisted oropharyngeal reconstruction with free tissue transfer

The surgical robot has been demonstrated to have useful applications in urologic, gynecologic, cardiac, general, and endocrine surgery. The development of robotic surgery has enhanced the precision and control of the surgeon in minimally invasive surgical situations specific to these specialties and, more recently, has been applied to the treatment of oropharyngeal tumors in the form of transoral robotic surgery (TORS). The elimination of the need for lip- and mandible-splitting approaches has allowed a reassessment of surgical options for the treatment of tumors that have until recently been primarily addressed nonoperatively with chemoradiation. The TORS approach has created the need to adapt current reconstructive options to robotic technology to manage the resultant tissue defects and to assess and compare the effectiveness of these procedures. This report details our early experience with the use of robot-assisted free tissue transfer for management of soft tissue defects of the oropharynx.     

Transoral robotic surgery: role in the management of upper aerodigestive tract tumors

The toxicity associated with concomitant chemoradiation for the management of laryngeal and pharyngeal carcinoma has been well documented. Minimally invasive surgical techniques offer the potential to extirpate the malignancy as a single-modality therapy and provide essential information that may direct subsequent treatment. In selected patients, radiation doses may be reduced and systemic chemotherapy may be withheld after tumor extirpation. Transoral laser microsurgery has proven effective, although inability to manipulate and suture tissue by this modality limits ablation and reconstruction of extensive defects. Transoral robotic surgery is a relatively new technique that provides several unique advantages, which include a 3-dimensional magnified view, ability to see and work around curves or angles, and the availability of 2 or 3 robotic arms that can be used to reconstruct extensive defects using either local, regional, or free flaps. Preliminary data suggest that transoral robotic surgery may provide a technique for ablation and reconstruction of pharyngeal defects that may be superior to other transoral techniques. It may also provide a means for personalizing therapy for oropharyngeal and supraglottic carcinoma.     

Combined laser and robotic approach for the management of a mixed laryngomucocele

Treatment of laryngoceles is surgical resection, through an external approach for external laryngoceles and through an endoscopic approach for internal laryngoceles. We report the first case of a mixed laryngomucocele treated with transoral robotic surgery. A patient presented with a history of chronic cough. Nasolaryngoscopy showed a sub-mucosal swelling into the larynx. Computed tomography confirmed the diagnosis of a right mixed laryngomucocele. A transoral robotic- and laser-assisted surgery was performed. Oral feeding was started on the first post-operative day. No post-operative complication was observed. There has been no evidence of recurrence during the following months. The generally used external and endoscopic approaches each have their limits in the treatment of laryngoceles. Transoral robotic surgery allows a minimally invasive approach with a wide exposure, making possible an absence of scar and a good functional recovery after the operation. Transoral robotic approach seems to allow an endoscopic approach for mixed and external lesions. Transoral robotic surgery combined with laser is an efficient minimally invasive technique and is the best option for the treatment of mixed laryngoceles and laryngomucoceles.     

Transoral robotic study of the vascular anatomy of the head and neck

We aimed to explore, highlight and accurately identify the vascular anatomy of the oropharynx, hypopharynx and supraglottis utilizing the transoral robotic perspective. This was a case series using anatomic studies of cadaveric specimens. The cadavers were injected with red- and blue-dyed silicone through the arterial and venous systems to define the macro- and microvasculature. Following injection of the specimen, a da Vinci robotic surgical system was engaged to perform a transoral dissection of the oropharynx, hypopharynx and supraglottic regions. Dissection was carried out under high-definition optics. Vascular structures were identified and followed to their terminal branches. We successfully performed transoral robotic dissections of five fresh frozen cadaveric human heads which had been injected with dyed silicone. The injection technique and use of a high-definition magnifying camera allowed us to visualize and identify the vasculature of the head and neck in a unique fashion. The cadaveric model provides an excellent educational tool to aid in training. Additionally, the use of this model and the transoral approach has allowed us to identify vessels which typically may not be visible on routine dissection. We believe this to be very relevant in training and improving performance for safe and bloodless transoral robotic surgery. To our knowledge this is the first study using the transoral robotic approach to examine the vascular anatomy of the oropharynx and larynx.     

Retropharyngeal lymphadenectomy with transoral robotic surgery for papillary thyroid cancer

Retropharyngeal metastasis of papillary thyroid carcinoma is a rare but well recognized phenomenon. Traditional open surgical approaches to nodal metastasis located in the retropharyngeal space are particularly morbid considering the relatively indolent nature of some thyroid cancers. Minimally invasive surgical approaches offer a useful alternative that is both low in morbidity and high in levels of patient acceptance. To assess feasibility and safety, we report a case series of robotic lymphadenectomy in two patients with thyroid cancer metastatic to the retropharyngeal space. Two patients, ages 66 and 73, with unilateral recurrent papillary carcinoma of the retropharyngeal lymph nodes had previously undergone thyroidectomy, neck dissection, and radioactive iodine ablation prior to retropharyngeal resection. Retropharyngeal lymphadenectomy via transoral robotic surgery was performed for both patients: for the first, the oropharyngeal wound was left to heal by secondary intention, while for the other patient, simple pharyngeal flap closure was performed. Retropharyngeal lymph node dissections were successfully carried out using a transoral robotic retropharyngotomy with the da Vinci surgical robotic system. Both patients tolerated the procedure well. One patient did developed temporary dysphagia which resolved with conservative measures, not requiring a feeding tube. We report the first two cases of transoral robot-assisted resection of thyroid cancer metastatic to the retropharyngeal lymph nodes. The technique is feasible, minimally invasive, and appears to be as safe as conventional surgical methods in achieving the goals of management of regionally metastatic disease.     

Transoral robotic surgery for the parapharyngeal space: expanding the transoral corridor

To analyze the feasibility, surgical outcomes and possible risks and complications encountered during transoral robotic surgery (TORS) for approaching para     

Endoscopic video‐assisted transoral resection of lateral oropharyngeal tumors

Endoscopic, video‐assisted transoral resection of oropharyngeal tumors is a novel technique carried out using common instruments present in most otolaryngology departments. The technique facilitates oropharyngeal resection akin to transoral robotic surgery (TORS) without the need for a robot. A dual surgeon approach, analogous to that of endoscopic skull base surgery is used. Each surgeon can actively participate in the resection with several key advantages over current techniques. The technique is applicable to departments internationally especially where the use of a robot is prohibited by cost or availability. This is especially important given the resection of oropharyngeal tumours offers the opportunity of single modality treatment or reduced intensity adjuvant treatment compared to traditional non‐surgical therapy.     

Schwannoma of tongue base treated with transoral carbon dioxide laser

Schwannomas are benign slow growing solitary tumours of nerve sheath origin and can arise from any myelinated nerve. They have been reported to occur in most parts of the body with the highest incidence (25%) in the head and neck region, although tongue base lesions are rare. The tumour is resistant to radiotherapy, and therefore, the treatment of choice is surgery. We present a case of a tongue base schwannoma which was completely extirpated with a carbon dioxide laser via the transoral approach. The patient experienced virtually no morbidity from the use of the laser. Whilst tongue base schwannoma has been documented, we could not find an earlier report in the English literature describing our method of treatment. We conclude that transoral carbon dioxide laser can be added to the surgical armamentarium for the management of other similar cases in the future.     

Transoral robotic resection of an ectopic tongue-base thyroid gland

Lingual thyroid is an uncommon condition, often asymptomatic. Given its benign nature, every treatment should be well balanced in terms of advantages and local morbidity. When a treatment is planned, medical and surgical therapy should be weighed against each other. Among surgical options, robotic techniques offer several advantages compared to traditional transoral procedures and external approaches, in terms of ability of resection, morbidity and quality of life. Here we present the case of a patient with tongue-base ectopic thyroid managed by means of transoral robotic surgery. The intuitiveness of the procedure associated with very minimal invasiveness are confirmed in this case. Particularly when dealing with benign lesions that involve hard-to-reach regions such as the tongue base, robotic techniques should be considered as a truly valid alternative to traditional techniques.     

Role of transoral robotic surgery in current head & neck practice

Morbidity and mortality associated with increasingly radical doses of chemoradiotherapy have led many to question the current standard of care in head and neck cancer. Recently, surgeons have developed minimally invasive, transoral techniques which have demonstrated excellent survival and favourable functional outcomes. Transoral robotic surgery (TORS) is the most recent, cutting edge in the evolution of transoral techniques; TORS allows surgeons unprecedented access to and visualisation of the upper aerodigestive tract. Early reports of TORS in the head and neck are favourable in both primary and recurrent disease. TORS has a role in the assessment of the patient with unknown primary and in the de-intensification of therapy in patients with cancers secondary to human papilloma virus. In this review we discuss the practical set up and technical features of TORS surgery and the application of TORS in primary and recurrent disease, and carcinoma of unknown primary. We outline the current ongoing research into the use of this technique and set out the vision for the future of this surgical modality.Surgical care for upper aerodigestive tract cancers has changed dramatically over the last three decades with technological advances in tumour imaging and resection. Recent advances in mechanical instrumentation and energy devices allow surgeons to remove head and neck cancers transorally; it is only rarely that the extrinsic muscles of the neck and the tongue are involved and the transoral route leads to reduced disruption of the external musculature, quicker recovery and a better functional outcome. In this review we will focus exclusively on the advances in transoral robotic surgery which have transformed the shape of resective head and neck cancer surgery.     

A cost effective custom dental guard for transoral robotic surgery

Journal of Robotic Surgery - There has been an increasing use of transoral robotic surgery (TORS) as studies have demonstrated its effectiveness for treating a variety of conditions. Postoperative...     

Review and update: robotic transanal surgery (RTAS)

As the field of surgery advances, new approaches have allowed surgeons additional flexibility to perform further interventions with minimal or no external incisions. For many years, single site access (SSA) has been used for transanal procedures, and platforms allowing modified endoscopic approaches have been available. These platforms have limitations related to access, visualization, dexterity, camera control, and instrumentation. Recently, surgical robotics companies have developed and introduced new technologies and platforms, which may help address some of these limitations. Comprehensive internet, open access, and medical and industry conference reviews of robotic surgery platforms and technology available for use in SSA surgery were conducted and 30 articles were found using keywords “robotic surgery, transanal, single site, robotic transanal surgery”. A PubMed, Medline, Journals @OVID and open access search for data related to these platforms and technologies was also performed yielding 11 articles. Abstracts were reviewed for those written in the English language, leaving 40 articles which were then filtered for those pertaining to robotic surgery, transanal. 58 abstracts were found, duplicates were eliminated, and the remaining 35 articles were read in their entirety by two reviewers. Several new and existing platforms are identified for use in SSA surgery for transanal surgery as well as abdominal and transoral surgery. These are reviewed, including brand, features, approved and suggested uses, and potential limitations. New robotic technologies serve to enhance the ability of surgeons to perform SSA surgery. This next generation of robotic surgery technology overcomes some of the limitations of preceding endoscopic SSA surgery technology and will enhance the advancement of robotic transanal surgery, but outcomes and performance data are still limited.     

显微支撑喉镜下CO2激光手术的麻醉管理

目的 总结显微支撑喉镜下CO2激光手术的麻醉管理.方法 2007年11月～2013年3月显微支撑喉镜下CO2激光治疗声带良性肿物113例,均行经鼻气管内插管全身麻醉,监测无创血压（BP）、心率（HR）、脉搏血氧饱和度（SpO2）和呼气末CO2分压（PETCO2）.结果 置入支撑喉镜即刻易出现循环波动,血压及心率较气管插管后升高,其中21例出现一过性窦性心动过缓.置入支撑喉镜后5 min循环渐趋平稳.SpO2和PETCO2正常.均在手术间拔除气管导管,安返病房.结论 术前全面评估患者全身情况及气管插管条件,完善围术期监测,加强术中管理,按需加深麻醉,及时纠正并处理危急情况,可保障显微支撑喉镜下CO2激光手术顺利进行及患者的安全.     

CO2激光在喉肿瘤切除术中的应用

目的探讨CO2激光治疗喉肿瘤的效果。方法 2010年7月～2011年8月对12例早期声门型及声门上型喉鳞状细胞癌,在支撑喉镜下明确病变范围,CO2激光机通过耦合器连接于显微镜,行CO2激光肿瘤切除术。结果手术时间14～33 min,平均18.7 min。术后当日进食。术后3 d内出院。12例随访6～18个月,平均13.4月,术后8个月局部复发1例,术后10个月颈部淋巴结转移1例,声带炎性肉芽肿致呼吸困难1例,声带粘连2例。结论 CO2激光治疗T1、T2期声门型及声门上型喉癌能确切切除肿瘤和保留喉功能,无须气管切开和鼻饲,住院时间短,并发症少。     

Transoral robotic supracricoid partial laryngectomy with cartilaginous framework preservation

To report the technical feasibility of performing transoral robotic supracricoid partial laryngectomy with preservation of the thyroid cartilage. This is a case report from a tertiary-care academic institution. A patient with recurrent T2 glottic squamous cell carcinoma of the larynx underwent supracricoid partial laryngectomy with negative margins and preservation of the laryngeal framework using transoral robotic surgery, where an adequate exposure to the endolarynx was obtained by using a Feyh-Kastenbauer retractor. The patient was successfully decannulated in postoperative week 4, and his gastrostomy tube was removed in postoperative week 6. Transoral robotic surgery may be feasible in select glottic/subglottic laryngeal lesions, if adequate exposure is obtained.     

Robotic-assisted oropharyngeal reconstruction

The development of robotic surgery has brought new levels of precision and control to minimally invasive surgical techniques. Its effectiveness, well established in urologic and gynecologic surgery applications, has also been demonstrated in cardiac, endocrine and general surgery. Recently, trans-oral robotic approaches to oropharyngeal tumor resection have been reported and, by eliminating the need for morbid lip and mandible splitting approaches, trans-oral robotic surgery (TORS) has allowed a re-assessment of surgical options for early stage tumors which have until recently been treated primarily with chemoradiation. The application of the TORS approach to malignant and non-malignant conditions affecting the oropharynx has created the need to develop robotic-assisted methods of managing the resultant tissue defects and to assess and compare the effectiveness of these procedures. This report details our early experience with the use of robotic surgery for management of soft tissue defects of the oropharynx in 12 patients.     

Oncologic outcomes of transoral laser surgery of supraglottic carcinoma compared with a transcervical approach

BACKGROUND: To evaluate the oncologic effectiveness of transoral laser surgery of supraglottic cancer, we compared a group of patients treated with laser surgery, with a stage-matched group treated with a transcervical approach. METHODS: Twenty-six patients who underwent laser surgery were retrospectively compared with 26 patients who underwent a transcervical approach. In both groups, the patients were classified as follows: 8% stage I, 23% stage II, 46% stage III, and 23% stage IV. RESULTS: The 5-year disease-specific survival rates were 80% for the laser group and 72% for the transcervical group (p = .5). The ultimate 5-year laryngeal preservation rate was 86% in the laser group and 80% in the transcervical group (p = .6). In both arms, all patients classified as T1 and T2 who survived 5 years after the surgical treatment of tumors retained the larynx. CONCLUSIONS: The oncologic results of transoral laser surgery of supraglottic cancer are equivalent to those of the classic transcervical approach.