Type of response to conversion chemotherapy strongly impacts survival after hepatectomy for initially unresectable colorectal liver metastases
2020
BACKGROUND: Hepatectomy for initially unresectable colorectal liver metastases (IU-CLM) is considered at high risk due to the extensive preoperative chemotherapy (CHT) and complex surgical procedures required, and its results are questioned due to frequent and early post-operative recurrence. We aim to compare patients with initially resectable CLM (IR-CLM) and IU-CLM and identify prognostic factors among IU-CLM patients. METHODS: A total of 81 patients with IU-CLM, undergoing hepatectomy following conversion CHT, were compared to 526 IR-CLM patients. Predictors of overall (OS) and disease-free survival (DFS) were identified for IU-CLM patients. RESULTS: Patients resected for IU-CLM, compared to IR-CLM, had more and larger CLM and more frequently underwent prolonged CHT and major/extended hepatectomy (P /=3) complications, longer median post-operative length of stay and lower 5-year survival rates (P 0.05 for both comparisons). CONCLUSION: Resection of IU-CLM has acceptable perioperative results. Tumour responsiveness to conversion CHT improves IU-CLM patient selection for hepatectomy.
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