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Liver Metastasis Surgery: Success Rates, Candidacy, and Outcomes

Hepatic Metastasectomy: Overview and Prognostic Factors

Surgical resection of liver metastases (metastasectomy) offers the only potential cure for select patients with oligometastatic disease confined to the liver.

Patient Selection Criteria

  • Controlled primary tumor.
  • No extrahepatic disease (or resectable).
  • Sufficient future liver remnant (>20-30% standard, >40% if cirrhotic).
  • Technically resectable with negative margins (R0).
  • Adequate performance status and liver function.

Survival Outcomes by Primary Tumor

Primary Cancer5-Year Overall SurvivalKey Prognostic Factors
Colorectal (CRC)40-58%CEA level, number/size of mets, lymph node status, disease-free interval, RAS mutation
Neuroendocrine50-70%Grade, Ki-67, functional status
Breast25-40%Subtype (HR+, HER2+), disease-free interval, extrahepatic spread
Melanoma20-35%Number of mets, LDH, immunotherapy era
Sarcoma (GIST)30-50%Mutation type, response to TKIs
Lung, Pancreatic, Gastric<20%Generally not candidates; aggressive biology

Modern Advances

  • Portal vein embolization (PVE): Induces hypertrophy of future liver remnant.
  • Two-stage hepatectomy / ALPPS: For initially unresectable disease.
  • Conversion therapy: Systemic therapy downstages to resectability.
  • Ablation (RFA/MWA): Adjunct for small, deep lesions.

Recurrence & Follow-up

Recurrence rates 50-70% at 2 years, mostly intrahepatic. Surveillance: CT/MRI q3-6mo x 2yr, then q6-12mo. Repeat resection feasible in selected cases.

Multidisciplinary tumor board evaluation is essential for optimal patient selection and sequencing of therapies.

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