Oligometastasis scoring system for predicting survival of patients with colorectal liver metastasis after hepatectomy

Background Oligometastasis, the presence of a small number of resectable metastatic tumors, usually has favorable outcomes. Here we examined whether the novel oligometastatic score (OLGS), which divides the number of colorectal liver metastases (CRLMs) by the time from colorectal resection to liver recurrence, better predicts CRLM patient survival than the commonly used clinical risk score. Methods A total of 143 patients who underwent curative...