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Surgical outcomes in patients with hepatic synchronous and metachronous colorectal metastasis.

AIM: To evaluate the impact of several clinical and pathological factors on the outcomes of surgery for hepatic colorectal cancer metastasis.

METHODS: Eighty-four liver metastasectomies in 77 consecutive patients with 90 colorectal cancer hepatic metastases were performed in our institution from 2009 to 2014. Surgery was carried out in 75 cases, as two patients were not eligible for surgery. Among them 43 (Group A) were affected by synchronous, and 32 (Group B) by metachronous lesions. Furthermore, 9 reoperations were performed in patients with initially synchronous lesions. The follow-up after surgery included total body CT scans every 3 months for the first year, and every 6 months for 4 years thereafter. Blood level of CEA was determined every 3 months.

RESULTS: The univariate analysis evidenced significantly more recurrences in patients with synchronous lesions (p=0.011), and higher grade, pN stage and CEA blood levels. In multivariate logistic regression analysis the statistically significant parameters found were: the pT stage (OR: 3.92, p = 0.039), the use of adjuvant chemotherapy for the colonic tumor (OR: 0.19, p = 0.025), and the adjuvant chemotherapy (OR: 4.11, p = 0.048). The global survival was 32 patients (41.5%), 17 with synchronous and 15 with metachronous lesions, and a significant difference in long term survival between these two groups was found (p = 0.008).

CONCLUSIONS: The most relevant prognostic factor in patients with hepatic colorectal cancer dissemination is the timing of metastasis; the metachronous lesions present better survival when surgically treated.

KEY WORDS: Colorectal cancer, Liver, Metastasis, Surgery.

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