Lymph node retrieval in colorectal cancer: determining factors and prognostic significance
Purpose: The study aimed to analyze clinicopathological factors that determine the extent of lymph node retrieval and to evaluate its prognostic impact in patients with colorectal cancer (CRC). Methods: The number of retrieved lymph nodes was analyzed in 381 CRC specimens. Lymph node count was relat...
Gespeichert in:
| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
16 February 2017
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| In: |
International journal of colorectal disease
Year: 2017, Jahrgang: 32, Heft: 7, Pages: 991-998 |
| ISSN: | 1432-1262 |
| DOI: | 10.1007/s00384-017-2778-8 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1007/s00384-017-2778-8 Verlag, Volltext: https://link-springer-com.ezproxy.medma.uni-heidelberg.de/article/10.1007/s00384-017-2778-8 
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| Verfasserangaben: | Johannes Betge, Lars Harbaum, Marion J. Pollheimer, Richard A. Lindtner, Peter Kornprat, Matthias P. Ebert, Cord Langner |
MARC
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| 245 | 1 | 0 | |a Lymph node retrieval in colorectal cancer |b determining factors and prognostic significance |c Johannes Betge, Lars Harbaum, Marion J. Pollheimer, Richard A. Lindtner, Peter Kornprat, Matthias P. Ebert, Cord Langner |
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| 520 | |a Purpose: The study aimed to analyze clinicopathological factors that determine the extent of lymph node retrieval and to evaluate its prognostic impact in patients with colorectal cancer (CRC). Methods: The number of retrieved lymph nodes was analyzed in 381 CRC specimens. Lymph node count was related to different clinicopathological variables by binary logistic regression. Progression-free survival (PFS) and cancer-specific survival (CSS) were determined using the Kaplan-Meier method and Cox regression models. Results: The median number of retrieved lymph nodes was 20 (mean 21 ± 10, range 1-65) in right-sided, 13 (16 ± 10, 1-66) in left-sided, and 15 (18 ± 11, 3-64) in rectal tumors. The number of retrieved lymph nodes was independently associated with T-classification (p < 0.001), N-classification (p = 0.014), and tumor size (p = 0.005) as well as right-sided tumor location (p = 0.012). There was no association with age, sex, tumor grade, mismatch-repair status, and lymph or blood vessel invasion. The longer the surgical specimen, the higher were the numbers of retrieved and positive lymph nodes (p < 0.001, respectively). In patients with locally advanced (T3/T4) tumors (n = 283), analysis of more than 12 lymph nodes was independently associated with PFS (HR = 0.63, p = 0.025) and CSS (HR = 0.54, p = 0.004). In the subset of T3/T4 N0 patients (n = 130), analysis of more than 12 lymph nodes similarly proved to be an independent predictor of outcome (PFS, HR = 0.48, p = 0.046; OS, HR = 0.41, p = 0.026). Conclusion: The number of retrieved lymph nodes is associated with higher tumor stage, tumor size, and right-sided location. Low lymph node count indicates adverse outcome in patients with locally advanced (T3/T4) disease. | ||
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