Local recurrence after curative resection for colorectal cancer: Frequency, risk factors and treatment

Analysis of 498 patients with colorectal carcinoma was retrospectively reviewed to evaluate the incidence, risk factors and therapy of local recurrent carcinoma following curative resection. Complete follow‐up information was obtained in all but four patients (99.2%). After a median follow up of 42 months, 64 out of 469 (13.6%) patients developed local recurrence (LR). The incidence of LR was higher in rectal than in colon cancer patients (18.3% vs 8.9%) (P < 0.005). Separate univariate and Cox analyses for rectal patients showed tumor site (P < 0.02). Dukes stage (P < 0.002), and adjuvant radiotherapy (P = 0.05) determined risk of LR. For colon cancer patients risk of LR was determined by histological tumor grade (P < 0.01). Out of 64 patients, 5 (7.8%) underwent radical excision of LR. Forty percent of these survived at 5‐year (P < 0.08). Palliative treatment (radio‐chemotherapy) obtained a 5‐year survival of 15.3%, with no survivors in no‐treatment group. These results suggest that local recurrent colorectal carcinoma remain a difficult treatment problem. More effective combinations of surgery and adjuvant therapy are therefore mandatory to reduce the incidence of local failure in high risk colorectal patients.

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