Validation of the T descriptor (TNM-8) in T3N0 non-small-cell lung cancer patients: a bicentric cohort analysis with arguments for redefinition
The current pT3N0 category represents a heterogeneous subgroup involving tumor size, separate tumor nodes in one lobe, and locoregional growth pattern. We aim to validate outcomes according to the eighth edition of the TNM staging classification. A total of 281 patients who had undergone curative lu...
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| Hauptverfasser: | , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
10 April 2021
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| In: |
Cancers
Year: 2021, Jahrgang: 13, Heft: 8, Pages: 1-10 |
| ISSN: | 2072-6694 |
| DOI: | 10.3390/cancers13081812 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.3390/cancers13081812 Verlag, lizenzpflichtig, Volltext: https://www.mdpi.com/2072-6694/13/8/1812 
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| Verfasserangaben: | Philip Baum, Samantha Taber, Stella Erdmann, Thomas Muley, Mark Kriegsmann, Petros Christopoulos, Michael Thomas, Hauke Winter, Joachim Pfannschmidt and Martin E. Eichhorn |
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| 520 | |a The current pT3N0 category represents a heterogeneous subgroup involving tumor size, separate tumor nodes in one lobe, and locoregional growth pattern. We aim to validate outcomes according to the eighth edition of the TNM staging classification. A total of 281 patients who had undergone curative lung cancer surgery staged with TNM-7 in two German centers were retrospectively analyzed. The subtypes tumor size >7 cm and multiple nodules were grouped as T3a, and the subtypes parietal pleura invasion and mixed were grouped as T3b. We stratified survival by subtype and investigated the relative benefit of adjuvant chemotherapy according to subtype. The 5-year overall survival (OS) rates differed between the different subtypes tumor diameter >7 cm (71.5%), multiple nodules in one lobe (71.0%) (grouped as T3a), parietal pleura invasion (59.%), and mixed subtype (5-year OS 50.3%) (grouped as T3b), respectively. The cohort as a whole did not gain significant OS benefit from adjuvant chemotherapy. In contrast, adjuvant chemotherapy significantly improved OS in the T3b subgroup (logrank p = 0.03). This multicenter cohort analysis of pT3N0 patients identifies a new prognostic mixed subtype. Tumors >7 cm should not be moved to pT4. Patients with T3b tumors have significantly worse survival than patients with T3a tumors. | ||
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