Surgical resection of lung metastases is a widely accepted procedure but long-term results are disappointing with a 5-year survival rate of approximately 40%. Pulmonary metastasectomy is only indicated when complete resection can be achieved. A better survival is reported in patients with a single metastasis or a disease-free survival of more than 3 years. Intravenous chemotherapy has no major impact on survival because high-dose therapy is limited by systemic side-effects. Isolated lung perfusion has the advantage of both selectively delivering an agent into the lung while diverting the venous effluent. This allows the drug to be given in a significantly higher dose compared to intravenous therapy, while drug levels in critical organs are kept low enough to avoid significant morbidity. Isolated lung perfusion has proven to be effective for the treatment of lung metastases in animal models while the procedure is technically safe in humans. However, the real clinical value and survival benefit remain to be determined in ongoing clinical trials.The aim of this paper was to update the literature on isolated lung perfusion for the treatment of lung metastases. Furthermore, some proposals are made in order to improve the ultimate prognosis of these patients.
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