What is the mechanism of pleural effusion (fluid accumulation in the pleural space) development in lung cancer (malignant neoplasm of the lung)?

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Last updated: April 19, 2025View editorial policy

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From the Research

Pleural effusion in lung cancer occurs when cancer cells invade the pleural space, causing fluid to accumulate between the layers of the pleura, and the most effective treatment approach is to prioritize palliative care, focusing on symptom management and quality of life, as indicated by the most recent study 1. The development of pleural effusion in lung cancer is a complex process, involving multiple mechanisms, including:

  • Direct spread of cancer cells to the pleura, leading to increased fluid production
  • Blockage of lymphatic vessels, resulting in fluid buildup
  • Release of inflammatory substances, increasing blood vessel permeability and fluid leakage
  • Obstruction of blood vessels, causing increased pressure and fluid leakage Symptoms of pleural effusion include:
  • Shortness of breath
  • Chest pain
  • Dry cough Treatment options for pleural effusion in lung cancer include:
  • Thoracentesis, to drain the fluid
  • Pleurodesis, to adhere the pleural layers together
  • Placement of an indwelling pleural catheter
  • Treatment of the underlying cancer with therapies such as chemotherapy, immunotherapy, or radiation According to the most recent study 1, hyperthermic intrathoracic chemotherapy and talc pleurodesis are equally effective and safe therapeutic options for treating patients with malignant pleural effusion and non-small cell lung cancer, with a median overall survival of 8-9 months. It is essential to prioritize palliative care and focus on symptom management and quality of life, as the primary goal of treatment is to improve the patient's overall well-being and reduce suffering, as emphasized by the study 1.

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This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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