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Erschienen in: Langenbeck's Archives of Surgery 5/2010

01.06.2010 | Original Article

Improving prediction of lateral node spread in low rectal cancers—multivariate analysis of clinicopathological factors in 1,046 cases

verfasst von: Kok-Yang Tan, Seiichiro Yamamoto, Shin Fujita, Takayuki Akasu, Yoshihiro Moriya

Erschienen in: Langenbeck's Archives of Surgery | Ausgabe 5/2010

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Abstract

Introduction

This study aims to search for independent predictors of lateral node metastasis in low rectal cancers.

Materials and methods

We analyzed 1,046 patients who underwent curative resection for lower rectal cancer in our prospectively collected database. All lymph nodes were dissected from the fresh specimen, and their locations were documented prospectively according to the classification by the Japanese Society of Cancer of the Colon and Rectum.

Results

More than 35% of the patients had demonstrated upward nodal metastasis in the direction of the inferior mesenteric vessels, while 11% demonstrated lateral node metastasis, which was present in 17.3% of patients with T3 and T4 lesions. Multivariate analysis revealed five factors to be statistically significant independent predictors of lateral node metastasis: female sex, tumors that were not well differentiated, pathological T3 and above, positive microscopic lymphatic invasion, and positive mesorectal nodes. Using the variables sex, differentiation, T stage, and mesorectal nodes as risk factors, because these could be elucidated preoperatively, the presence of lateral node metastasis was then analyzed according to the number of positive risk factors. When there were fewer than three positive factors, the risk of lateral nodal spread was low (4.5%). When three or more risk factors were positive, the odds of lateral node metastasis were more than 7.5 times higher (p < 0.001).

Conclusion

The findings of this study provide a scoring system that can be used to guide the clinician to the presence of lateral node metastasis in low rectal cancers.
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Metadaten
Titel
Improving prediction of lateral node spread in low rectal cancers—multivariate analysis of clinicopathological factors in 1,046 cases
verfasst von
Kok-Yang Tan
Seiichiro Yamamoto
Shin Fujita
Takayuki Akasu
Yoshihiro Moriya
Publikationsdatum
01.06.2010
Verlag
Springer-Verlag
Erschienen in
Langenbeck's Archives of Surgery / Ausgabe 5/2010
Print ISSN: 1435-2443
Elektronische ISSN: 1435-2451
DOI
https://doi.org/10.1007/s00423-010-0642-1

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