Kerley C Line

A highly cited and helpful paper for understanding these lines is the published in the New England Journal of Medicine . It provides clear visual examples and concise explanations of the anatomic basis for each line type. Key Characteristics of Kerley C Lines

To identify Kerley C lines, it is essential to distinguish them from the other variants: Appearance Significance Long, unbranching, diagonal Parahilar (upper lobes) Distension of anastomotic lymphatics. B Lines Short, horizontal, parallel Peripheral bases (costophrenic angles) Thickened subpleural interlobular septa. C Lines Reticular, "spider-web" Short/Mesh Central and basal zones Overlapping B lines or diffuse infiltration. D Lines Same as B lines Retrosternal space Best seen on lateral radiographs. Clinical Significance and Etiology kerley c line

First described by the Irish radiologist Peter Kerley in the 1930s, Kerley lines are linear opacities seen on chest radiographs of patients with pulmonary venous hypertension. While Kerley A lines (long, linear opacities radiating from the hila) and Kerley B lines (short, horizontal lines at the lung bases) are well-documented, Kerley C lines are often overlooked or mischaracterized. Understanding all three patterns is crucial for accurate interpretation of interstitial lung fluid. A highly cited and helpful paper for understanding