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<p>Up to 50% of patients with metastatic cancer develop lung metastases during their disease course. Lung metastases are linked to poor prognosis across various cancer types and might impair the quality of life of patients, causing dyspnoea, cough, haemoptysis and pain, potentially diminishing physical, functional and emotional well-being. Lung metastases arise from a complex interplay of tumour-secreted factors such as VEGF, TGFβ and CCL2, which drive vascular remodelling, immune cell recruitment and extracellular matrix reprogramming. Additionally, tumour-derived exosomes and microparticles contribute to organotropism and immunosuppression by altering the lung microenvironment. The ensemble of these modifications creates a pre-metastatic niche conducive to tumour cell colonization and outgrowth. Lung metastases are primarily diagnosed through imaging; histological confirmation is sometimes required to distinguish them from primary lung cancer. The size and number of lung metastases, timing of primary cancer treatment, histology, and the patient’s clinical condition are all considered to determine the most appropriate treatment. When a locoregional approach is not possible, histology-based, molecular-driven systemic therapy is the choice. No systemic treatment is currently available specifically for lung metastases. Advances in understanding the distinct stages of pre-metastatic niche formation and lung metastasis outgrowth might lead to the development of prevention strategies and tailored treatments.</p>

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Lung metastases

  • 期刊论文

  • 发表日期：

    2025年8月21日

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  • Lodovica Zullo,
  • Dimitris Filippiadis,
  • Lizza E. L. Hendriks,
  • Daniel Portik,
  • Jonathan D. Spicer,
  • Ignacio I. Wistuba,
  • Benjamin Besse

摘要

Up to 50% of patients with metastatic cancer develop lung metastases during their disease course. Lung metastases are linked to poor prognosis across various cancer types and might impair the quality of life of patients, causing dyspnoea, cough, haemoptysis and pain, potentially diminishing physical, functional and emotional well-being. Lung metastases arise from a complex interplay of tumour-secreted factors such as VEGF, TGFβ and CCL2, which drive vascular remodelling, immune cell recruitment and extracellular matrix reprogramming. Additionally, tumour-derived exosomes and microparticles contribute to organotropism and immunosuppression by altering the lung microenvironment. The ensemble of these modifications creates a pre-metastatic niche conducive to tumour cell colonization and outgrowth. Lung metastases are primarily diagnosed through imaging; histological confirmation is sometimes required to distinguish them from primary lung cancer. The size and number of lung metastases, timing of primary cancer treatment, histology, and the patient’s clinical condition are all considered to determine the most appropriate treatment. When a locoregional approach is not possible, histology-based, molecular-driven systemic therapy is the choice. No systemic treatment is currently available specifically for lung metastases. Advances in understanding the distinct stages of pre-metastatic niche formation and lung metastasis outgrowth might lead to the development of prevention strategies and tailored treatments.