Kerley B Lines On X Ray Review

They are typically 1–2 cm long and less than 1 mm thick.

On a chest X-ray, Kerley B lines are characterized by: kerley b lines on x ray

The lungs are divided into small structural units called . These lobules are separated by thin walls of connective tissue known as interlobular septa . Normally, these septa are too thin to be seen on an X-ray. However, when they become thickened due to fluid accumulation (edema), lymphatic congestion, or fibrosis, they become visible as the distinct horizontal "B lines". Primary Causes and Clinical Significance They are typically 1–2 cm long and less than 1 mm thick