Salvage Transoral Laser Supraglottic Laryngectomy after Radiation Failure: A Report of Seven Cases

Strategies for CO2 Laser Use in Laryngeal Microsurgery: A Systematic Review

OBJECTIVE

We aim to systematically review the literature addressing perioperative practices for optimal use of the CO2 laser in laryngeal transoral laser microsurgery (TOLMS), with a focus on safety.

DATA SOURCES

A systematic review of publications indexed in Medline, Embase, and EBM reviews-Cochrane Central Register of Controlled Trials which evaluated perioperative strategies for the use of CO2 laser in laryngeal TOLMS was conducted.

REVIEW METHODS

Records obtained from the search strategy were assessed for eligibility in a 2-step process by 2 independent researchers using the Covidence software.

RESULTS

Among 2143 identified records, 103 were included in this study. The majority of studies (n = 25) focused on the use of the CO2 laser in oncologic resection, while 20 addressed the treatment of vocal cord paralysis, 16 discussed the treatment of pediatric or congenital pathologies, 11 detailed the management of benign lesions, and 31 studies tackled other surgical indications. Strategies for safe CO2 TOLMS were highly heterogeneous across studies and included preoperative measures (ie, related to the environment, staff preparation, patient protection, and ventilation), intraoperative precautions (ie, protection of nontarget structures, technical considerations, topical and systemic medications), and postoperative strategies (ie, related to airway protection, oral intake, vocal rest, hospitalization duration, drug regimen, and consultant follow-up).

CONCLUSION

The results provided in this study can be used as a framework to guide the creation of laser safety protocols across institutions, guide quality improvement initiatives, the development of simulation training activities, and as a tool to facilitate resident teaching and skill assessment.

Surgery for Supraglottic Laryngeal Cancer

Although total laryngectomy continues to be important treatment of supraglottic laryngeal cancer, the management of early-stage disease has evolved from primary radiation/chemoradiation to consideration of partial laryngectomy surgery. Surgeon experience and careful patient selection can lead to excellent oncologic and functional outcomes for these techniques. However, advanced stage tumors and salvage situations are challenging and the ability to eradicate disease and preserve function should be carefully considered. Contraindications to supraglottic laryngectomy depend on surgical approach, as do complications. With adequate patient selection, high rates of cure and function can be achieved with both open and transoral supraglottic laryngectomy procedures.

Salvage Partial Laryngectomy after Failed Radiotherapy: Oncological and Functional Outcomes

Objective: To investigate oncological and functional outcomes in patients treated with salvage partial laryngectomy (SPL) after failed radio/chemotherapy. Study design: Retrospective multicenter chart review. Methods: Medical records of patients treated with SPL from January 1998 to January 2018 in two University Medical centers were retrieved. The SPL included horizontal supraglottic laryngectomy, hemi-laryngectomy and crico-hyoido-epiglottopexy. The following outcomes were investigated: histopathological features; overall survival (OS); recurrence-free survival (RFS) local and regional controls; post-operative speech recovery; and the oral diet restart and decannulation. Results: The data of 20 patients with cT1–cT3 laryngeal cancer were collected. The mean follow-up of patients was 69.7 months. The mean hospital stay was 43.0 days (16–111). The following complications occurred in the immediate post-operative follow-up: neck fistula (N = 6), aspiration pneumonia (N = 5), and chondronecrosis (N = 2). Early or late total laryngectomy was carried out over the follow-up period for the following reasons: positive margins and local recurrence/progression (N = 7), chondronecrosis (N = 2) and non-functional larynx (N = 1). The restart of the oral diet was carried out in 12/15 (80%) SPL patients (five patients being excluded for totalization). All patients recovered speech, and decannulation was performed in 14 patients (93%). The 5-year OS and RFS were 50% and 56%, respectively. The 5-year local and regional control rates were 56% and 56%, respectively. Conclusions: Partial laryngectomy is an alternative therapeutic approach to total laryngectomy in patients with a history of failed radiation.

Meta-analytic comparison of robotic and transoral laser surgical procedures in supraglottic carcinoma

Objective

To assess published reports of oncological surgical success rates in patients who underwent transoral laser supraglottic surgery and robotic surgery for supraglottic cancer.

Methods

A systematic review of the literature was conducted and a meta-analysis of published data was performed. PubMed, Sage, Medline and Cochrane data sources were investigated. Overall survival rates, disease-specific survival rates, additional treatments and recurrence rates were investigated to determine the success of the surgical procedures.

Results

The meta-analysis included 24 studies; 1617 studies were excluded. There were no statistically significant differences between the transoral laser supraglottic surgery and transoral robotic supraglottic surgery groups in terms of overall survival (77.0 per cent and 82.4 per cent respectively) and disease-specific survival (75.8 per cent and 87.0 per cent respectively). There was recurrence in 164 out of 832 patients (19.7 per cent) in the transoral laser supraglottic surgery group and in only 6 out of 66 patients (9 per cent) in the transoral robotic supraglottic surgery group.

Conclusion

Transoral laser surgery and robotic surgery appear to have comparable and acceptable oncological success rates.

Salvage Transoral Videolaryngoscopic Surgery for radiorecurrent hypopharyngeal and supraglottic cancer

OBJECTIVE

To evaluate the feasibility of Transoral Videolaryngoscopic Surgery (TOVS) for radiorecurrent supraglottic and hypopharyngeal cancer, and to compare survival and complications between primary and radiorecurrent cases.

METHODS

Twelve cases of salvage TOVS for radiorecurrent cancer and 53 cases of TOVS as an initial treatment (primary cases) were evaluated. Days to resume soft diet, Functional Outcomes of Swallowing Scale (FOSS), postoperative complications, epithelization days and survival outcomes were assessed by retrospective chart review.

RESULTS

FOSS score was significantly worse in salvage cases compared with primary cases. Bleeding and airway compromise was slightly greater in salvage cases than in primary cases; however, this was not statistically significant. Wound healing was significantly delayed in salvage cases compared with primary cases (P<0.001). In primary cases, wounds were re-epithelized within 60 days in 83% of patients and within 90 days in almost all patients, while in salvage cases 42% of patients required more than 90 days for wound healing. In salvage cases, the 5-year overall survival, disease specific survival rate, local control rate, and laryngeal preservation rate was 85.7%, 85.7%, 62.5%, and 78.0%, respectively, and 85.7%, 98.0%, 91.3%, and 97.8%, respectively, for primary cases. Local control rate was significantly better in primary cases than in salvage cases.

CONCLUSION

Salvage TOVS was feasible in highly selected cases. After serial transoral surgery, the final laryngeal preservation rate was satisfactory. Swallowing function in salvage cases tended to be worse than in primary cases, and a significantly longer time was required for wound healing.

Transoral laser surgery for laryngeal cancer

Transoral laser microsurgery (TLM) was pioneered in the early 1970s as an approach to treat laryngeal pathology with precision and minimal thermal damage to the vocal cords. Over the last four decades, TLM has become an integral part of the treatment paradigm for patients with laryngeal cancer. TLM is one of the primary treatment options for early-stage laryngeal tumors. However, in recent years, surgeons have begun to develop TLM into a more versatile approach which can be used to address advanced laryngeal tumors. Although functional outcomes following TLM for advanced laryngeal disease are scarce, survival outcomes appear to be comparable with those reported for organ preservation strategies employing external beam radiation therapy (EBRT) and chemotherapy. In addition, TLM plays an important role in the setting of recurrent laryngeal cancer following primary irradiation. TLM has been demonstrated to decrease the need for salvage total laryngectomy resulting in improved functionality while retaining comparable oncologic outcomes. The aim of this review is to elucidate the indications, techniques, and oncological outcomes of TLM for advanced laryngeal cancers.