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Meta-Analysis of Survival of Patients with Stage IV Colorectal Cancer Managed with Surgical Resection Versus Chemotherapy Alone

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Abstract

Background

There is no consensus regarding the appropriate management of asymptomatic and minimally symptomatic patients with stage IV colorectal cancer and irresectable metastases.

Methods

A literature search was conducted on Medline and Embase. Outcome measures included: survival; postoperative morbidity and mortality; complications from the primary tumor and the need for surgery to manage complications; the likelihood of curative surgery after initial response to primary therapy; and length of hospital stay. Quantitative meta-analysis was performed where appropriate.

Results

Eight retrospective studies, including 1,062 patients, met the criteria for inclusion in this study. Meta-analysis has shown an improvement in the survival of patients managed with palliative resection of their primary tumor, with an estimated standardized median difference of 6.0 months (standardized difference, 0.55; 95% confidence interval (CI), 0.29, 0.82; p < 0.001). Patients managed with chemotherapy alone were 7.3 times more likely to have a complication from the primary tumor (95% CI, 1.7, 34.4; p = 0.008). There was no difference in the response rates to chemotherapy, making metastatic disease amendable to curative resection (0.85; 95% CI 0.40, 1.8; p = 0.662).

Conclusions

To date, only retrospective data are available, showing that palliative resection of the primary tumor in asymptomatic or minimally symptomatic patients with stage IV colorectal cancer is associated with longer survival. Resection of the primary tumor reduces the likelihood of complications from the primary tumor and avoids the need for emergency procedures.

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Authors and Affiliations

  1. Department of Surgery, School of Medicine and Dentistry and North Queensland Centre for Cancer Research, James Cook University, Townsville, QLD, 4814, Australia

    A. P. Stillwell & Y-H. Ho

  2. School of Public Health and Tropical Medicine and North Queensland Centre for Cancer Research, James Cook University, Townsville, QLD, 4814, Australia

    P. G. Buettner

Authors
  1. A. P. Stillwell
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  2. P. G. Buettner
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  3. Y-H. Ho
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Correspondence to A. P. Stillwell.

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Stillwell, A.P., Buettner, P.G. & Ho, YH. Meta-Analysis of Survival of Patients with Stage IV Colorectal Cancer Managed with Surgical Resection Versus Chemotherapy Alone. World J Surg 34, 797–807 (2010). https://doi.org/10.1007/s00268-009-0366-y

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  • DOI: https://doi.org/10.1007/s00268-009-0366-y

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