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Right colon, left colon, and rectal cancer have different oncologic and quality of life outcomes

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International Journal of Colorectal Disease Aims and scope Submit manuscript

Abstract

Purpose

Colorectal cancer patients are commonly considered a single entity in outcomes studies. This is particularly true for quality of life (QOL) studies. This study aims to compare oncologic and QOL outcomes between right colon, left colon, and rectal cancer in patients operated on in a single high-volume institution.

Methods

A prospectively maintained database was queried to identify patients with pathological stages I–III colorectal adenocarcinoma electively operated on with curative intent between 2000 and 2010. Patient characteristics, perioperative and oncologic outcomes, and QOL were compared according to cancer location.

Results

Two-thousand sixty-five (606 right colon cancer [RCC], 366 left colon cancer [LCC], and 1093 rectal cancer [RC]) patients met the inclusion criteria. LCC had better overall survival (OS) and disease-free survival (DFS) in the non-adjusted analysis (p < 0.001) and better OS in multivariate analysis adjusted by age, gender, ASA, chemotherapy, and pathological stage (p = 0.024). Although RCC had worse OS and DFS in non-adjusted survival analysis than LCC and RC, when adjusted for the factors above, RCC had better survival outcomes than RC, but not LCC. COX regression analysis showed age (p < 0.001), gender (p = 0.016), ASA (p < 0.001), pathological stage (p < 0.001), adjuvant chemotherapy (p = 0.043), and cancer location (p = 0.024) were independently associated with OS. Age (p < 0.001), gender (p = 0.030), ASA (p = 0.004), and pathological stage (p < 0.001) were independently associated with DFS. Patients with RC reported more sexual dysfunction and work restrictions than colon cancers (p = 0.015 and p < 0.001, respectively).

Conclusion

In an adjusted multivariate analysis, colon cancers demonstrated better survival outcomes when compared to rectal cancers.

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All authors have given substantial contributions to the conception, design, analysis, and interpretation of data for the work as well as drafting the work and final approval of the version to be published and are in agreement to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.

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Correspondence to Hermann Kessler.

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Duraes, L.C., Steele, S.R., Valente, M.A. et al. Right colon, left colon, and rectal cancer have different oncologic and quality of life outcomes. Int J Colorectal Dis 37, 939–948 (2022). https://doi.org/10.1007/s00384-022-04121-x

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