Imaging recommendation · Chest

Hemoptysis

Q: What's the alternative imaging for hemoptysis when massive hemoptysis with instability?

CT — CTA Chest after airway secured → IR for bronchial artery embolization (iv contrast).

Q: What's the alternative imaging for hemoptysis when risk factors for vascular cause (hht, prior pe)?

CT — CT Pulmonary Angiogram (iv contrast).

Recommended: CT Chest with IV contrast (CTA if massive) is the preferred imaging study for hemoptysis. Massive hemoptysis (> 200 mL/24h) is an emergency — protect airway, prepare for bronchial artery embolization.

Recommended study

CT Chest with IV contrast (CTA if massive)

CT IV contrast Preferred Chest EmergencyAcute inpatientOutpatient Reviewed 2026-05

Massive hemoptysis (> 200 mL/24h) is an emergency — protect airway, prepare for bronchial artery embolization. Modest hemoptysis: contrast CT to evaluate parenchyma, vasculature, malignancy.

If the default doesn't apply

Massive hemoptysis with instability

CT CTA Chest after airway secured → IR for bronchial artery embolization IV contrast

Risk factors for vascular cause (HHT, prior PE)

CT CT Pulmonary Angiogram IV contrast

Watch-outs

Airway protection first

Position bleeding lung down (lateral decubitus). Selective intubation of unaffected mainstem if uncontrolled bleeding.

Mixed-source bleeding

Differentiate hemoptysis from hematemesis and posterior epistaxis — they look the same in a panicked patient.

Pearls

Aspergilloma (fungus ball in a pre-existing cavity) is a classic non-malignant cause of recurrent hemoptysis.
Bronchial arteries are the source in ~90% of cases; pulmonary arteries in ~5%.
Bronchoscopy localizes the bleed and may be both diagnostic and therapeutic in stable patients.