Cordectomías láser: resultados oncológicos y funcionales

Prognosis and Outcomes in Early Stage Glottic Carcinoma Involving the Anterior Commissure Treated with Laser CO2 Surgery: A Retrospective Observational Analysis

The anterior commissure (AC) is the area where the vocal cords attach to the thyroid cartilage through Broyles' ligament. Many authors argue that involvement of the anterior commissure in early stage glottic carcinoma (I, II) constitutes a risk factor for local recurrence. The objective of this study is to evaluate whether anterior commissure involvement in early stage glottis cancer is an independent risk factor for recurrence and mortality. The study included all those patients diagnosed with glottis carcinoma in stages I and II of the AJCC treated by transoral laser surgery at the Hospital San Pedro (Logroño, Spain) between 2005 and 2015. Patients were divided into two groups according to the presence (AC1) or absence (AC0) of involvement of the commissure. Of 29 patients treated, 44.8% were AC1. Patients with anterior commissure involvement had more local recurrence (p = 0.2701); higher mortality rate (p = 0.2256); lower disease-free survival (p = 0.0881) and a lower overall survival (p = 0.0331). The 5-year survival rate was 24.5% lower in patients with invasion of the anterior commissure. The involvement of the anterior commissure is an independent risk factor that should be considered in the prognosis of laryngeal cancer.

Single vocal cord irradiation: a competitive treatment strategy in early glottic cancer

INTRODUCTION

The treatment of choice for early glottic cancer is still being debated; ultimately it relies on the functional outcome. This paper reports on a novel sparing 4D conformal technique for single vocal cord irradiation (SVCI).

MATERIAL AND METHODS

The records of 164 T1a patients with SCC of the vocal cord, irradiated in the Erasmus MC between 2000 and 2008, were analyzed for local control and overall survival. The quality of life was determined by EORTC H&N35 questionnaires. Also the VHI (voice handicap index), and the TSH (thyroid stimulating hormone) blood levels, were established. On-line image guided SVCI, using cone beam CT or stereotactic radiation therapy (SRT) techniques, were developed.

RESULTS

A LC rate at five-years of 93% and a VHI of 12.7 (0-63) was determined. It appeared feasible to irradiate one vocal cord within 1-2mm accuracy. This way sparing of the contralateral (CL) vocal cord and CL normal tissues, could be achieved.

CONCLUSIONS

Given the accuracy (1-2mm) and small volume disease (CTV limited to one vocal cord), for the use of stereotactic RT techniques SVCI with large fraction sizes is currently being investigated in clinic. It is argued that hypofractionated SVCI can be a competitive alternative to laser surgery.

[Treatment of early glottic carcinoma with transoral laser CO2]

OBJECTIVE

We present our outcome in the treatment of 125 patients with malignant glottic lesions between 1992 and 2003 in a retrospective study.

PATIENT AND METHODS

We analyze 125 cases of patients, with previously untreated carcinoma of the larynx with histological diagnosis, treated with Transoral Laser Microresection. We will pay special attention to those tumors involving the Anterior Commissure. We will also analyze several parameters related to the post and intraoperatory histopathological report, in order to decide adjuvant therapies. We will also analyze the technique indications, complications, hospital length of stay, oncologic and functional outcomes, survival and follow up of recurrences.

OUTCOMES AND CONCLUSION

Transoral laser microresection is an effective and functional preserving procedure, and nowadays the base of the treatment of early glottic carcinoma. Anterior Commissure involvement is a prognostic factor. Sometimes complementary therapies are needed based on by the histopathological report.