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Accurate preoperative staging of colorectal cancers is critical in selecting patients for neoadjuvant therapy prior to resection. Inaccurate staging, particularly understaging, may lead to involved resection margins and poor oncological outcomes. Our aim is to determine preoperative imaging accuracy of colorectal cancers compared to histopathology and define the effect of inaccurate staging on patient selection for neoadjuvant treatment(NT). Staging and treatment were determined for patients undergoing colorectal resections for adenocarcinomas in a single tertiary centre(2016-2020). Data were obtained for 948 patients. The staging was correct for both T and N stage in 19.68% of colon cancer patients. T stage was under-staged in 18.58%. At resection, 23 patients (3.36%) had involved pathological margins; only 7 of which had been predicted by pre-operative staging. However, the staging was correct for both T and N stage in 53.85% of rectal cancer patients. T stage was understaged in 26.89%. Thirteen patients had involved(R1)margins; T4 had been accurately predicted in all of these cases. There was a general trend in understaging both the tumor and lymphonodal involvement (T p 

Original publication

DOI

10.1007/s13304-021-01095-3

Type

Journal article

Journal

Updates Surg

Publication Date

04/2022

Volume

74

Pages

591 - 597

Keywords

Adenocarcinoma, Colorectal Cancers, Outcomes, Positive Margins, Stadiation, Adenocarcinoma, Colonic Neoplasms, Humans, Margins of Excision, Neoadjuvant Therapy, Neoplasm Staging, Rectal Neoplasms