What Are Kerley B Lines

Kerley B Lines: A Sign of Pulmonary Edema

What are Kerley B lines?

Kerley B lines are a type of interstitial lung edema that is characterized by the presence of thickened interlobular septa. These lines are typically seen in the lower zones of the lungs and can be caused by a variety of conditions, including heart failure, renal failure, and interstitial lung disease.

How are Kerley B lines diagnosed?

Kerley B lines are diagnosed on chest X-ray. The lines appear as thin, linear opacities that extend from the hilum to the periphery of the lungs. They are typically more prominent in the lower zones of the lungs and may be accompanied by other signs of pulmonary edema, such as pleural effusions and interstitial infiltrates.

What is the treatment for Kerley B lines?

The treatment for Kerley B lines depends on the underlying cause. If the lines are caused by heart failure, then treatment will focus on improving cardiac function. If the lines are caused by renal failure, then treatment will focus on improving renal function. If the lines are caused by interstitial lung disease, then treatment will focus on managing the underlying disease.