Imaging recommendation · Chest

Incidental mediastinal cyst, suspected bronchogenic cyst

Q: What's the alternative imaging for incidental mediastinal cyst, suspected bronchogenic cyst when mri not available?

CT — CT Chest with IV contrast (iv contrast).

Recommended: MRI Mediastinum (T2 hyperintense fluid signal) is the preferred imaging study for incidental mediastinal cyst, suspected bronchogenic cyst. Most common mediastinal congenital cyst.

Recommended study

MRI Mediastinum (T2 hyperintense fluid signal)

MRI IV contrast Preferred Chest Outpatient Reviewed 2026-05

Most common mediastinal congenital cyst. Carinal / subcarinal location classic. Variable T1 signal depending on proteinaceous content.

If the default doesn't apply

MRI not available

CT CT Chest with IV contrast IV contrast

Watch-outs

Hyperdense on CT can mimic solid mass

Proteinaceous content can mimic solid lesion on CT — MRI clarifies cystic nature.

Pearls

T2 markedly hyperintense, T1 variable (water = dark; proteinaceous = bright).
No enhancement; thin imperceptible wall.
Symptomatic, infected, or growing cysts: surgical resection.