Abstract

Background: In the Netherlands, approximately 15% of patients with rectal cancer undergo a low Hartmann’s procedure (low-HP). This is often preoperatively planned to avoid poor functional outcome or complications, but might be unplanned as a result of intraoperative difficulties. Low-HPs seem to be associated with worse oncological outcomes. Methods: All patients who underwent either restorative low anterior resection (rLAR), planned low-HP, or unplanned low-HP for primary rectal cancer in 2016 were included from a nationwide cohort. Main outcomes were 4-year local recurrence (LR) rate and disease-free survival (DFS). Results: Of 2043 patients, 1704 underwent rLAR (83.4%), 253 planned low-HP (12.4%), and 86 unplanned low-HP (4.2%). Among intended rLAR patients (n = 1790), independent risk factors for unplanned low-HP were older age, higher body mass index (BMI), higher American Society of Anesthesiologists (ASA) score, and more distal tumor location. Oncological outcomes after low-HPs were worse than after rLARs (LR 13.7% vs 5.6%, DFS 54.7% vs 71.8%, both p < 0.001), but similar for unplanned and planned low-HP. In multivariable analysis, unplanned and planned low-HP were not associated with LR or DFS, but R1 resection was (HR 6.6 (4.1–10.6), HR 3.0 (2.2–4.0), respectively). In R1 resections, the distal margin was more often involved after low-HP (70.0% vs 28.6%, p = 0.013) compared to rLAR. Conclusion: Poor outcomes in univariable analysis after low-HP appear to be associated with more challenging procedures and increased risk of involved resection margin rather than the low-HP itself. In case of expected difficulties, an extralevator abdominoperineal excision or referral to an expert center might be an alternative to improve resection margins. Trial registration: ClinicalTrials.gov, identifier NCT05539417, retrospectively registered on September 16, 2022.

Original languageEnglish
Article number4
JournalTechniques in coloproctology
Volume30
Issue number1
DOIs
Publication statusPublished - 1 Dec 2026

Keywords

  • Conversion to open surgery
  • Minimally invasive surgical procedures
  • Rectal cancer
  • Resection margins

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