Kerly B Lines

Examine the outer 2 cm of the lung fields.

Kerly B Lines are short, horizontal lines that appear at the lung periphery on a chest X-ray. They are usually 1-3 mm long and are located at the edge of the lung, often near the costophrenic angle. These lines are a sign of interstitial lung disease or pulmonary edema, which causes fluid accumulation in the interstitial tissue of the lungs. kerly b lines

Kerley B lines are small, thin, horizontal lines visible near the outer edges of the lungs on a chest X-ray. They are typically less than 2 cm long, run perpendicular to the pleural surface (the lining of the lung), and are most commonly found in the costophrenic angles—the lowest corners of the lungs near the ribs and diaphragm. Examine the outer 2 cm of the lung fields

They are named after the Irish neurologist and radiologist (1900–1979), who first described them in the 1930s as a sign of lymphatic congestion in the lungs. These lines are a sign of interstitial lung

The lung tissue is divided into small units called secondary pulmonary lobules. Thin connective tissue bands called interlobular septa separate these lobules. These septa contain pulmonary veins and lymphatic vessels.