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1.	Agger, Erik, et al. (author) Circumferential resection margin and local recurrence after rectal cancer surgery: a population-based study cohort 2019 In: Colorectal Disease. - : Wiley. - 1462-8910 .- 1463-1318. ; 21:S3, s. 22-22 Conference paper (peer-reviewed)abstract 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

Agger, Erik, et al. (author)
Circumferential resection margin and local recurrence after rectal cancer surgery: a population-based study cohort
2019
In: Colorectal Disease. - : Wiley. - 1462-8910 .- 1463-1318. ; 21:S3, s. 22-22
Conference paper (peer-reviewed)abstract
- 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

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