Which symptom is most likely to be present with a pleural effusion in a patient with lung cancer?

Which symptom is most likely to be present with a pleural effusion in a patient with lung cancer?

• A. Dyspnea
• B. Hemoptysis
• C. Weight gain
• D. Fever

Answer: (A)

Shortness of breath is the most likely symptom because fluid in the pleural space from a malignant effusion limits how much the lung can expand and worsens gas exchange. That mechanical restriction and reduced ventilation lead to noticeable dyspnea, especially with activity. Hemoptysis can occur with lung cancer but isn’t a direct result of the fluid accumulation in the pleural space. Weight gain is not typical for malignant effusion, and fever isn’t a defining feature unless there’s a superimposed infection. So dyspnea best reflects the impact of a malignant pleural effusion on lung function.

Shortness of breath is the most likely symptom because fluid in the pleural space from a malignant effusion limits how much the lung can expand and worsens gas exchange. That mechanical restriction and reduced ventilation lead to noticeable dyspnea, especially with activity. Hemoptysis can occur with lung cancer but isn’t a direct result of the fluid accumulation in the pleural space. Weight gain is not typical for malignant effusion, and fever isn’t a defining feature unless there’s a superimposed infection. So dyspnea best reflects the impact of a malignant pleural effusion on lung function.