Tumour budding correlates with local recurrence of rectal cancer

Colorectal Disease : the Official Journal of the Association of Coloproctology of Great Britain and Ireland
E SykB Glimelius

Abstract

Predictive tools for local recurrence (LR) of rectal cancer are needed. This study assessed the predictive value of tumour budding detected by MNF-116 and laminin-5 γ2 chain (Ln-5 γ2). In a case-control study, the surgical specimens of 48 patients with LR after from primary resection of rectal carcinoma and 82 control patients matched for gender and preoperative radiation from a population of 1180 patients operated with total mesorectal excision were studied. The presence of budding was examined using immunohistochemistry with Ln-5 γ2 and pan-cytokeratin staining with MNF-116. Tumour budding counts ranged from 0 to 106 buds (mean 43, median 38) for all patients. Significantly more tumours with more than 35 buds were seen in the LR than in the control group (67 vs 44%; P = 0.02). The spread of budding was also more extensive in the LR than in the control group (63 vs 49%, P = 0.03). In a multivariate analysis with tumour, node, metastasis stage, MNF-116-stained budding was an independent predictor of local failure (P = 0.02). The budding frequency was higher in irradiated tumours in comparison with tumours that had not received irradiation (mean 53 vs 38, P = 0.03). For Ln-5 γ2, more tumours with ≥ 10 buds were seen in the group...Continue Reading

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