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COLORECTAL CANCER |
1 Department of Histopathology and Cranfield Postgraduate Medical School in Gloucestershire, Gloucestershire Royal Hospital, Great Western Road, Gloucester GL1 3NN, UK
2 Medical Statistics Laboratory, Imperial Cancer Research Fund, Oxford, UK
Correspondence to:
Correspondence to:
Professor N A Shepherd, Department of Histopathology, Gloucestershire Royal Hospital, Great Western Road, Gloucester GL1 3NN, UK;
neil.shepherd{at}gloucr-tr.swest.nhs.uk
ABSTRACT
Background and aims: There is a need for objective easily determined pathological prognostic parameters in Dukes' B colon carcinoma to allow selection of such patients for further treatment as the role of adjuvant chemotherapy for these patients remains unclear. This study was initiated to assess the influence of pathological factors on prognosis in an unselected prospective series of Dukes' B colonic cancer.
Methods: The Gloucester Colorectal Cancer study, established in 1988, recruited more than 1000 cases. Meticulous pathological assessment of the 268 Dukes' B colonic cancer resections in this series included evaluation of all pathological factors that could influence staging and prognosis. All patients entered a comprehensive follow up system.
Results: Four pathologically determined factors—peritoneal involvement, venous spread (both submucosal and extramural), spread to involve a surgical margin, and perforation through the tumour—were independent prognostic factors in multivariate analysis. Combining these four factors into a simple cumulative scoring system generated clinically useful prognostic groups.
Conclusions: The cumulative prognostic index allows apportionment of patients with Dukes' B colon cancer into defined prognostic groups, which in turn could allow more objective selection of patients for adjuvant therapy, especially as part of clinical trials.
Keywords: colon cancer; prognostic parameters; Dukes' stage B; venous spread; prognosis
Abbreviations: PI, prognostic index
Relevant Article
Gut 2002 51: 6-7.
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