Circumferential resection margin and local recurrence after rectal cancer surgery: a population-based study cohort

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Aim: Studies have suggested that there is a difference in risk of local recurrence(LR) with circumferential resection margins (CRM) less than 1.0 mm. We aimed toexamine how exact resection margins affect LR risk.
Method: Data from the Swedish Colorectal Cancer Registry (SCRCR) were usedfor retrospective analysis of resected rectal cancers between 2005 and 2013. Primaryendpoint was LR.
Results: 12146 cases were identified of which 8666 cases were analysed after exclusion. 388 cases had CRM < 1.0 mm and 8278 cases CRM ≥ 1.0 mm. There were 42LR (11.4%) when CRM < 1.0 mm and 280 LR (3.5%) when CRM ≥ 1.0 mm. LRrate was 17% (n = 27/159), 7.1% (n = 15/210), 5.5% (n = 26/473) and 3.4%(n = 254/7550) when CRM was 0.0 mm, 0.1–0.9 mm, 1.0–1.9 mm andCRM ≥ 2 mm respectively. LR risk at CRM 0.0 mm was significantly increased compared to all other groups. No significant difference in LR between CRM 1.0–1.9 mm and ≥ 2 mm was observed. LR was diagnosed earlier when CRM < 1.0 mm.
Conclusion: LR risk is related with accuracy to the surgical circumferential resec-tion margin distance. There was no difference in LR risk above CRM 1.0 mm.Most LRs occurred within two years after surgery when CRM was below 1.0 mm
Originalspråkengelska
ArtikelnummerWP19
Sidor (från-till)22
TidskriftColorectal Disease
Volym21
UtgåvaS3
DOI
StatusPublished - 2019
EvenemangEuropean Society of Coloproctology - Wien, Österrike
Varaktighet: 2019 sep. 252019 sep. 27

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