Abstract
Purpose
Tenets of ‘good quality’ colon cancer surgery include mesocolic plane dissection to preserve an intact mesocolic fascia/peritoneum, and excision of sufficient mesocolon for adequate lymphadenectomy. However, it remains controversial what clinicopathological factors determine ‘good quality’ surgery, and whether quality of surgery influences morbidity/mortality. This study documents the quality of colon cancer surgery at a quaternary referral centre and identifies factors that influence quality of surgery and post-operative outcomes.
Methods
Consecutive patients who underwent resection for colon adenocarcinoma at St. James’s University Hospital, Leeds, UK (2015–2017), were included. Primary outcome measures included (i) plane of mesocolic dissection, prospectively assessed; and (ii) tissue morphometry (area of mesentery and vascular pedicle length). Other histopathological data were extracted from a prospective database. Clinical data were obtained from the National Bowel Cancer Audit and individual records.
Results
Four hundred five patients were included (mean 69.6 years). The majority (67.4%) of specimens were mesocolic plane dissections. Median area of mesentery excised was 12,085.4 mm2. Median vascular pedicle length was 89.3 mm. Post-operative complication was recorded in one-third of patients. Mesocolic plane excision was associated with open surgery (OR 1.80, 95% CI 1.05–3.09), especially in emergency colectomy. Open resections also had a greater mesentery excised (P = 0.002), but incurred more post-operative complication (OR 2.11, 95% CI 1.12–3.99). Post-operative complication was not associated with plane of excision or tissue morphometry.
Conclusion
Majority of resections were ‘optimal’ mesocolic plane dissections. Open resections yielded better quality specimens, but incurred more morbidity. There is room for improvement in the quality of laparoscopic colon cancer surgery, particularly those performed as emergency.
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Acknowledgements
Mr. Nikhil Suresh assisted in clinical data collection for this study. The authors acknowledge all surgeons (PM Sagar, DA Burke, ID Botterill, K Riyad, RN Saunders, J Tiernan, RP Baker, JR Hance, S Maslekar, A Quyn) and histopathologists who have contributed and assessed specimens included in this study. Dr. Kheng-Seong Ng is supported by the Mitchell J. Notaras Fellowship in Colorectal Surgery (University of Sydney). Dr. Nicholas West and Professor Phil Quirke are supported by Yorkshire Cancer Research. Professor Jayne is supported by Bowel Cancer UK and RCS England. Professors Jayne and Quirke are NIHR Senior Investigators.
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Ethical approval for the storage and measurement of specimen photographs was granted by the North East–York Research Ethics Committee (Jarrow, UK; Unique Reference Number: 07/MRE03/24). Clinical data was obtained as part of service evaluation to determine current standards of colon cancer surgery at our unit.
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Ng, KS., West, N.P., Scott, N. et al. What factors determine specimen quality in colon cancer surgery? A cohort study. Int J Colorectal Dis 35, 869–880 (2020). https://doi.org/10.1007/s00384-020-03541-x
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DOI: https://doi.org/10.1007/s00384-020-03541-x