Question:
Most common cause of hemoptysis worldwide is:
Most common cause of hemoptysis worldwide is:
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Consider a disease with very high global prevalence, especially in developing countries, that erodes pulmonary blood vessels.
Updated On: Jun 23, 2026
- Pulmonary tuberculosis
- Bronchiectasis
- Lung carcinoma
- Mitral stenosis
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The Correct Option is A
Solution and Explanation
Step 1: Define hemoptysis and its causes.
Hemoptysis is the expectoration of blood from the lower respiratory tract (below the larynx). The causes include:
Globally, pulmonary tuberculosis (TB) is the most common cause of hemoptysis. This is because TB remains highly prevalent in developing countries (which constitute the majority of the world's population), and TB causes hemoptysis through multiple mechanisms:
In developed countries (e.g., USA, UK), bronchiectasis and carcinoma are more common causes. However, worldwide statistics are dominated by the high TB burden in Asia, Africa, and Latin America.
Conclusion: Pulmonary tuberculosis is the most common cause of hemoptysis worldwide.
Hemoptysis is the expectoration of blood from the lower respiratory tract (below the larynx). The causes include:
- Pulmonary tuberculosis (TB)
- Bronchiectasis
- Lung carcinoma
- Pneumonia
- Mitral stenosis
- Pulmonary embolism
- Arteriovenous malformations
Globally, pulmonary tuberculosis (TB) is the most common cause of hemoptysis. This is because TB remains highly prevalent in developing countries (which constitute the majority of the world's population), and TB causes hemoptysis through multiple mechanisms:
- Erosion of blood vessels by cavitating lesions
- Rasmussen's aneurysm (aneurysm of pulmonary artery within a cavity)
- Bronchiectasis secondary to TB
- Aspergilloma in old TB cavities
In developed countries (e.g., USA, UK), bronchiectasis and carcinoma are more common causes. However, worldwide statistics are dominated by the high TB burden in Asia, Africa, and Latin America.
Conclusion: Pulmonary tuberculosis is the most common cause of hemoptysis worldwide.
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