Question

A young man with tuberculosis presents with massive recurrent hemoptysis. For angiographic treatment, which vascular structure should be evaluated first?

• A. Pulmonary artery
• B. Bronchial artery
• C. Pulmonary vein
• D. Superior vena cava

Hint:

In massive hemoptysis, the high-pressure bronchial circulation, not the pulmonary circulation, is usually the culprit and the first target on angiography.

Answer 1

The Correct Option is B

This question tests where massive bleeding in a TB patient usually comes from, and which vessel an interventional radiologist checks before treating it. Let's go through each option.

1. Pulmonary artery: This is the low pressure circuit that oxygenates blood in the alveoli. It is rarely the source of major hemoptysis, and TB does not typically damage it enough to bleed heavily.
2. Bronchial artery: These vessels branch off the aorta, run at systemic pressure, and supply the airways and any cavity wall. Long-standing TB makes them thick and tortuous, and they are the source of bleeding in the vast majority of massive hemoptysis cases. This is the vessel checked and treated first.
3. Pulmonary vein: This carries oxygenated blood away from the lung toward the heart. It plays no real part in hemoptysis and is not evaluated for embolization.
4. Superior vena cava: This is a large systemic vein draining the upper body into the right atrium. It has nothing to do with lung bleeding.

Since the bronchial arteries are the usual bleeding source and the vessel actually embolized, they are the structure evaluated first on angiography.

Let's summarize:

• Bronchial arteries run at systemic pressure and are the source of most massive hemoptysis, especially in TB.
• Bronchial artery embolization is the standard first-line treatment, so these arteries are studied first.

Therefore, the answer is the bronchial artery.