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Hepatectomy for colorectal liver metastases (CRLM) may offer good long-term survival. The impact of the tumor-free surgical margin on long-term results remains controversial, and we have assessed this component in 185 patients.

Between 1992 and 2005, 185 patients underwent primary hepatectomy with curative intent for CRLM (which originated from colon/rectum 133/52, synchronous/metachronous 66/119, and single/multiple 100/85). In this study, 105 major and 80 minor hepatectomies were evaluated; 133 hepatectomies had pedicle clamping.

Operative mortality was 1.1%, morbidity was 25.7%, and blood transfusion requirement was 27.6%. Stratification of tumor-free margin in the patients with R0 liver resection was greater than or equal to 10 mm (63.0% of patients), 6–9 mm (11.4% of patients), 3–5 mm (16.5% of patients), and less than or equal to 2 mm (9.1% of …