M A S Khan1, A R Hakeem1, N Scott2, R N Saunders1. 1. John Goligher Unit of Coloproctology, Leeds, UK. 2. Department of Pathology, St James's Hospital, Leeds, UK.
Abstract
AIM: Circumferential resection margin involvement (R1) in rectal cancer is a predictive factor for poor prognosis. The aim of this study was to confirm the prognostic significance of R1 in colon cancer resection and to establish whether the introduction of laparoscopic colorectal surgery influenced this. METHOD: Prospectively collected data on a patient pathway data manager for sequential patients with colon cancer treated at our specialist unit from January 2005 to December 2010 were analysed. There were 1110 colonic resections (elective 865; emergency 245). A circumferential resection margin involvement of < 1 mm was considered positive. RESULTS: The total R1 rate was 13.3% (elective 10.4%; emergency 23.6%; P < 0.001). Other statistically significant risk factors for an R1 resection included tumour perforation (P < 0.001), poorly differentiated carcinoma (P < 0.001), T4 tumour (P < 0.001), vascular invasion (P < 0.001), lymph node metastasis (P < 0.001), distant metastasis (P < 0.001) and palliative resection (P < 0.001). Over half of the elective resections were undertaken laparoscopically (486/865; 56.2%). When compared with elective open resection (379/865; 43.8%), the R1 rate was similar (P = 0.491) with similar disease-free survival (DFS) and overall survival (OS). The overall relapse rate was 18.9% in R0 and 55.5% in R1 resections (P < 0.001). Kaplan-Meier survival analysis showed significant improvements in DFS and OS in R0 over R1 patients. CONCLUSION: The R1 margin in colon cancer resection is an important marker for advanced disease and a prognostic factor for DFS and OS. The introduction of laparoscopic surgery has not influenced the outcome in our unit despite a complex case mix. Colorectal Disease
AIM: Circumferential resection margin involvement (R1) in rectal cancer is a predictive factor for poor prognosis. The aim of this study was to confirm the prognostic significance of R1 in colon cancer resection and to establish whether the introduction of laparoscopic colorectal surgery influenced this. METHOD: Prospectively collected data on a patient pathway data manager for sequential patients with colon cancer treated at our specialist unit from January 2005 to December 2010 were analysed. There were 1110 colonic resections (elective 865; emergency 245). A circumferential resection margin involvement of < 1 mm was considered positive. RESULTS: The total R1 rate was 13.3% (elective 10.4%; emergency 23.6%; P < 0.001). Other statistically significant risk factors for an R1 resection included tumour perforation (P < 0.001), poorly differentiated carcinoma (P < 0.001), T4 tumour (P < 0.001), vascular invasion (P < 0.001), lymph node metastasis (P < 0.001), distant metastasis (P < 0.001) and palliative resection (P < 0.001). Over half of the elective resections were undertaken laparoscopically (486/865; 56.2%). When compared with elective open resection (379/865; 43.8%), the R1 rate was similar (P = 0.491) with similar disease-free survival (DFS) and overall survival (OS). The overall relapse rate was 18.9% in R0 and 55.5% in R1 resections (P < 0.001). Kaplan-Meier survival analysis showed significant improvements in DFS and OS in R0 over R1 patients. CONCLUSION: The R1 margin in colon cancer resection is an important marker for advanced disease and a prognostic factor for DFS and OS. The introduction of laparoscopic surgery has not influenced the outcome in our unit despite a complex case mix. Colorectal Disease
Authors: Ashley L Cairns; Alexis B Hess; Holly Rieken; Nicholas Lin; Shambavi Rao; Yoonsun Jee; Jean H Ashburn; Preston R Miller; Samuel P Carmichael; Nathan T Mowery Journal: Am Surg Date: 2022-02-24 Impact factor: 1.002
Authors: Lieve G J Leijssen; Anne M Dinaux; R Amri; Hiroko Kunitake; Liliana G Bordeianou; David L Berger Journal: J Gastrointest Surg Date: 2018-10-03 Impact factor: 3.452
Authors: Georgios Antonios Margonis; Yuhree Kim; Jason D Prescott; Thuy B Tran; Lauren M Postlewait; Shishir K Maithel; Tracy S Wang; Douglas B Evans; Ioannis Hatzaras; Rivfka Shenoy; John E Phay; Kara Keplinger; Ryan C Fields; Linda X Jin; Sharon M Weber; Ahmed Salem; Jason K Sicklick; Shady Gad; Adam C Yopp; John C Mansour; Quan-Yang Duh; Natalie Seiser; Carmen C Solorzano; Colleen M Kiernan; Konstantinos I Votanopoulos; Edward A Levine; George A Poultsides; Timothy M Pawlik Journal: Ann Surg Oncol Date: 2015-08-19 Impact factor: 5.344
Authors: Michelle Yang; Aseeb Ur Rehman; Chunlai Zuo; Christine E Sheehan; Edward C Lee; Jingmei Lin; Zijin Zhao; Euna Choi; Hwajeong Lee Journal: Cancer Med Date: 2016-05-11 Impact factor: 4.452
Authors: Labrinus van Manen; Henricus J M Handgraaf; Michele Diana; Jouke Dijkstra; Takeaki Ishizawa; Alexander L Vahrmeijer; Jan Sven David Mieog Journal: J Surg Oncol Date: 2018-06-24 Impact factor: 3.454