1011P - Comparison of therapeutic effect of total laryngectomy vs larynx-preservation approach for T4a larynx cancer: a multicenter retrospective study

Date 29 September 2014
Event ESMO 2014
Session Poster Display session
Topics Anticancer Agents
Head and Neck Cancers
Surgical Oncology
Therapy
Biological Therapy
Radiation Oncology
Presenter Yoon Seok Choi
Citation Annals of Oncology (2014) 25 (suppl_4): iv340-iv356. 10.1093/annonc/mdu340
Authors Y.S. Choi1, S. Park2, E. Song3, S. Cho4, M. Park5, K.U. Park6, K.H. Lee7, H.J. Yun1
  • 1Department Of Internal Medicine, Chungnam National University College of Medicine, 301-721 - Daejeon/KR
  • 2Department Of Internal Medicine, Chosun University College of Medicine, Gwangju/KR
  • 3Department Of Internal Medicine, Chonbuk National University Medical School, Jeonju/KR
  • 4Department Of Internal Medicine, Chonnam National University Medical School & Chonnam National University Hwasun Hospital, 519-809 - Hwasun-Gun/KR
  • 5Department Of Internal Medicine, Wonkwang University College of Medicine, Iksan/KR
  • 6Department Of Internal Medicine, Dongsan Medical Center, Keimyung University, Daegu/KR
  • 7Department Of Internal Medicine, Chungbuk National University College of Medicine, Cheongju/KR

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Abstract

Aim

Organ-preservation approach including (chemo)radiation has been established as standard treatment for advanced larynx cancer. However, in T4a disease with thyroid cartilage invasion, the optimal frontline treatment has not been evaluated within controlled trials. In this multicenter retrospective review, we aimed to assess and compare the therapeutic outcomes of total laryngectomy (TL) and larynx preservation (LP) in patients with T4a larynx cancer.

Methods

Patients who were diagnosed larynx cancer with thyroid cartilage invasion and treated with either TL or LP in 7 institutes between Jan 2000 and Dec 2012 were examined. Patients were stratified by primary treatment and survival was compared using log-rank tests. Cox proportional hazards regression model were performed to determine the effect of treatment and other clinical parameters on therapeutic outcomes.

Results

Eighty-nine patients were included. Median age was 67.15 years. ECOG performance status (PS) was 0-1 in 80 (89.9%) and 2 in 9 (10.1%).Median follow-up time was 27.2 months. Among them, 53 patients (59.6%) were treated with primary TL and 36 patients (40.4%) with LP. Median progression-free survival (PFS) of TL group was not reached at the time of analysis and significantly longer than LP group showing 13.5 months (CI: 6.5-20.6) (P < 0.001). On univariate analysis, along with primary treatment, ECOG PS (P = 0.048) and clinical N stage (P = 0.034) affected PFS significantly. Multivariate analysis revealed that primary treatment (TL vs LP, HR 0.269, CI: 0.133-0.545, P < 0.001) and ECOG PS (0-1 vs 2, HR 3.568, CI: 1.395-9.128, P = 0.008) were independent predictors of PFS. Intriguingly, beneficial effect of TL over LP was more prominent in patients showing lower nodal stage (N0-1).

Conclusions

In this analysis, patients treated with TL showed longer PFS than with LP. This result suggests that primary TL might be a better therapeutic option for T4a larynx cancer with thyroid cartilage invasion, especially in subjects with limited nodal involvement.

Disclosure

All authors have declared no conflicts of interest.