Kerley B Lines X Ray -

Kerley B lines are short, parallel peripheral lines on a chest X-ray that indicate a thickening of the interlobular septa in the lungs. They are one of the most reliable radiographic signs of pulmonary edema and provide critical clues for diagnosing congestive heart failure.

To fully appreciate the significance of Kerley B lines, one must first understand the anatomy of the lung interstitium. The lung is composed of air-filled alveoli and a network of supporting tissue called the interstitium, which contains blood vessels, lymphatics, and connective tissue. Specifically, the interlobular septa are the connective tissue walls that separate the secondary pulmonary lobules—the functional units of the lung. These septa contain pulmonary veins and lymphatic channels. kerley b lines x ray

Detection typically prompts immediate clinical actions, such as: Kerley B lines are short, parallel peripheral lines

Kerley A Lines: Longer (up to 6 cm) unbranching lines that radiate from the hila toward the periphery. They represent distension of anastomotic lymphatics. The lung is composed of air-filled alveoli and

Mitral Valve Disease: Specifically mitral stenosis, which creates chronic back-pressure into the pulmonary vasculature.