Background: Resected colorectal liver metastases (CRLM) frequently recur intrahepatically. Selection criteria for repeat hepatectomy of recurrent CRLM are ill-defined.
Methods: We performed an institutional review of patients with recurrent CRLM undergoing repeat hepatectomy from 2003 to 19. Post-recurrence overall (rOS) and recurrence-free survival (RFS) were analyzed with Cox proportional hazards modeling.
Results: n = 147 experienced recurrent CRLM; 11% (n = 38) received repeat hepatectomy of which there was one Clavien-Dindo IIIa complication. Median rOS was 41 months; median RFS was 9 months. Improved rOS and RFS were independently associated with additional post-operative chemotherapy after repeat hepatectomy (HR 0.35 and 0.34, respectively); poor rOS with recurrent CRLM >3 cm (HR 4.4) and <12 months from first hepatectomy to recurrence (HR 4.8); poor RFS with ≥3 recurrence liver metastases (HR 2.8) (All P < 0.05).
Discussion: Repeat hepatectomy for recurrent CRLM can be performed safely. Worse survival following repeat hepatectomy is independently associated with >3 cm and ≥3 liver lesions at recurrence, and <12 months to recurrence. Additional post-operative chemotherapy after repeat hepatectomy is associated with improved outcomes.
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