Double density sign (left atrium)

The double-density sign, also known as the double right heart border, is seen on frontal chest radiographs in the presence of left atrial enlargement, and occurs when the right side of the left atrium extends behind the right cardiac shadow, indenting the adjacent lung and forming its own distinct silhouette .

If large enough, the left atrium can actually reach beyond the border of the right atrium; this is known as atrial escape . The right superior pulmonary vein can lead to a similar appearance .

See also

• double density sign (osteoid osteoma)
• double density sign (berry aneurysm)

Siehe auch:

• vergößerter linker Vorhof
• atrial escape
• double density sign of berry aneurysms
• double density sign of osteoid osteomas
• double density sign

und weiter:

• double density sign of osteoid osteoma
• hotter spot within hot area sign
• femoropatellare Instabilität