Tumor Volume Useful Beyond Classic Criteria in Selecting Larynx Cancers For Preservation Therapy.

Autor: Sharrett JM; Department of Radiation Oncology, Cleveland Clinic Foundation, Cleveland, Ohio, U.S.A., Ward MC; Department of Radiation Oncology, Cleveland Clinic Foundation, Cleveland, Ohio, U.S.A., Murray E; Department of Radiation Oncology, Cleveland Clinic Foundation, Cleveland, Ohio, U.S.A., Scharpf J; Taussig Cancer Institute; and the Head and Neck Institute, Cleveland Clinic Foundation, Cleveland, Ohio, U.S.A., Lamarre ED; Taussig Cancer Institute; and the Head and Neck Institute, Cleveland Clinic Foundation, Cleveland, Ohio, U.S.A., Prendes BL; Taussig Cancer Institute; and the Head and Neck Institute, Cleveland Clinic Foundation, Cleveland, Ohio, U.S.A., Lorenz RR; Taussig Cancer Institute; and the Head and Neck Institute, Cleveland Clinic Foundation, Cleveland, Ohio, U.S.A., Burkey BB; Taussig Cancer Institute; and the Head and Neck Institute, Cleveland Clinic Foundation, Cleveland, Ohio, U.S.A., Koyfman SA; Department of Radiation Oncology, Cleveland Clinic Foundation, Cleveland, Ohio, U.S.A., Woody NM; Department of Radiation Oncology, Cleveland Clinic Foundation, Cleveland, Ohio, U.S.A., Greskovich JF; Department of Radiation Oncology, Cleveland Clinic Foundation, Cleveland, Ohio, U.S.A., Adelstein DJ; Department of Hematology and Medical Oncology, Cleveland Clinic Foundation, Cleveland, Ohio, U.S.A., Geiger JL; Department of Hematology and Medical Oncology, Cleveland Clinic Foundation, Cleveland, Ohio, U.S.A., Joshi NP; Department of Radiation Oncology, Cleveland Clinic Foundation, Cleveland, Ohio, U.S.A.
Jazyk: angličtina
Zdroj: The Laryngoscope [Laryngoscope] 2020 Oct; Vol. 130 (10), pp. 2372-2377. Date of Electronic Publication: 2019 Nov 13.
DOI: 10.1002/lary.28396
Abstrakt: Objective: To investigate the association between tumor volume and locoregional failure (LRF) after concurrent chemoradiation (CCRT) for locally advanced larynx cancer (LC).
Methods: This is a retrospective cohort study from 2009 to 2014 identified from an institutional review board-approved registry. Fifty-nine of 68 patients with locally advanced larynx cancer treated with definitive CCRT who had available imaging for review were identified. The main endpoint to be assessed was the association between gross tumor volumes (GTV; T = total, P = primary, N = nodal) and LRF. Receiver operative characteristic (ROC) curves were used to investigate diagnostic accuracy.
Results: Twenty LRFs were observed, resulting in a 2-year LRF rate of 39% (95% CI, 23-52%). On UVA, the GTV-T (P = .01), GTV-P (P = .05), and GTV-N (P = .04) were statistically significant predictors of LRF. Furthermore, age, smoking status, N-stage, larynx subsite, and tracheostomy/feeding tube dependence were potentially associated with LRF (P < .3), whereas T-stage (T3-4 vs. T2) was not (HR 1.05, 95% CI, 0.38-2.91, P = .92). In the multivariable model, GTV-P (HR 1.022, 95% CI, 0.999-1.046, P = .07) and GTV-N (HR 1.053, 95% CI, 1.0004-1.108, P = .05) were the two most impactful covariates on the model's R 2 . ROC analysis suggested an optimal cut point of 12 cc in the GTV-T. The 2-year LRF for GTV-T > 12 cc was 64.2% and ≤ 12 cc was 16.4%, P = .006.
Conclusion: GTV is associated with LRF after definitive CCRT for LC. Patients with bulky primary and/or nodal tumors may be better served with upfront surgical resection regardless of T-stage. Further investigation into the safety of larynx preservation for low-volume T4 tumors can be considered.
Level of Evidence: 4 Laryngoscope, 130:2372-2377, 2020.
(© 2019 The American Laryngological, Rhinological and Otological Society, Inc.)
Databáze: MEDLINE
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