Evaluation of a Completion Total Mesorectal Excision in Patients After Local Excision of Rectal Cancer: A Word of Caution

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  • a Department of Surgery, Leiden University Medical Center, Leiden; Dutch Institute for Clinical Auditing, Leiden; Department of Surgery, IJsselland Hospital, Capelle a/d IJssel; Department of Surgery, VU University Medical Center, Amsterdam; Department of Medical Decision Making, Leiden University Medical Center, Leiden; and Department of Surgery, Academic Medical Center, Amsterdam, the Netherlands.
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Background: According to Dutch guidelines, locally excised, low-risk, pT1 or ypT0–1 rectal cancer should not necessarily be followed by completion total mesorectal excision (cTME) in contrast to rectal cancers with higher T stages or unfavorable features. This study evaluated cTME after local excision at a national level with possible determinants for decision-making. Methods: All patients in the Dutch Colorectal Audit (DCRA) who underwent local excision of rectal cancer between 2012 and 2015 were included. Guideline adherence for performing cTME was determined with univariate and multivariate analyses to identify factors related to noncompliance. Results: According to the guidelines, of 530 included patients, cTME was indicated in 283 (53%), and among those, was performed in 82 (29%). Guideline adherence for performing cTME improved significantly (P<.001), from 10% in 2012 to 44% in 2015. Lower Charlson comorbidity index in patients with high-risk pT1 rectal cancer and younger patients (aged 61–70 years vs ≥80 years) with pT≥2 rectal cancer were associated with increased performance of cTME (odds ratio [OR], 13.50; 95% CI, 1.39–131.32, and OR, 6.25; 95% CI, 1.83–21.31, respectively). Conclusions: In this population-based study from the Netherlands, only a minority of patients underwent cTME after local excision of rectal cancer with pathologic features indicating the need for further treatment according to the guidelines. Although the percentage of patients undergoing cTME increased over time, the study indicated a tendency toward rectal-preserving treatment with potential oncologic risks.

Author contributions: Study concept and design: van Groningen, van Hagen, Doornebosch, Tanis, de Graaf. Data acquisition: Dutch Colorectal Audit. Quality control of data and algorithms: van Groningen, van Hagen. Data analysis and interpretation: van Groningen, van Hagen, Doornebosch, Tanis, de Graaf. Statistical analysis: van Groningen, Marang-van Mheen. Manuscript preparation: van Groningen, van Hagen. Manuscript editing: van Groningen, van Hagen, Doornebosch, Tanis, de Graaf, Marang-van Mheen. Critical revision: All authors.

Correspondence: Julia T. van Groningen, MD, Dutch Institute for Clinical Auditing, Rijnsburgerweg 10, 2333 ZA, Leiden, the Netherlands. Email: j.vangroningen@dica.nl
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