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• W2110696072 abstract "Purpose Tumor volume (TV) is one of the main reported factors determining the outcome of treatment in head-and-neck carcinomas. In this study, the prognostic impact of TV was explored in the context of a randomized trial with the patients assigned to receive standard radiotherapy (RT) alone or RT plus platinum compounds (RT alone, RT plus cisplatin, or RT plus carboplatin). Methods and materials The tumor outlines were traced and digitized on each pretreatment CT slice for each of the 101 patients studied. Taking into account the magnification factor of the scan and CT slice thickness, a computer with specifically designed software calculated the TV in cubic centimeters. Results The median overall survival for the whole group of patients was 21.6 months (95% confidence interval, 13.0–30.2) and the 3-year survival rate was 40%. The addition of platinum compounds to RT (Groups 2 and 3) significantly improved the survival rate (RT alone vs. RT plus cisplatin, hazard ratio 0.36, p = 0.002; RT alone vs. RT plus carboplatin, hazard ratio 0.53, p = 0.029). In univariate analysis, the most significant parameters for survival were treatment group, total gross tumor volume (TGTV), complete response, nodal GTV, primary GTV, and performance status. In multivariate analysis, treatment group, TGTV, gender, and primary site were independent prognostic factors for survival. A prognostic threshold of 22.8 cm3 was detected for TGTV. Patients with a TGTV of <22.8 cm3 were more likely to achieve a complete response and had a median survival of 45.3 months, and those with a TGTV >22.8 cm3 had a median survival of 12.3 months (log–rank test, p = 0.0102). Conclusion The prognostic significance of the TGTV was confirmed and a cutoff value of 22.8 cm3 derived. Our data indicated that locally advanced head-and-neck carcinomas should not be treated by standard (once-daily) RT alone. Tumor size and disease subsite should be taken into account in future randomized trials to increase their statistical power." @default.
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• W2110696072 date "2004-07-01" @default.
• W2110696072 modified "2023-09-26" @default.
• W2110696072 title "Prognostic impact of tumor volumetry in patients with locally advanced head-and-neck carcinoma (non-nasopharyngeal) treated by radiotherapy alone or combined radiochemotherapy in a randomized trial" @default.
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• W2110696072 doi "https://doi.org/10.1016/j.ijrobp.2004.01.021" @default.
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