Cxr Kerley B Lines (2025)

| Finding | Appearance | Differentiating Feature | | :--- | :--- | :--- | | | Short, horizontal, peripheral. | Abuts the pleura; specific location (bases). | | Pulmonary Vessels | Branching, tapering. | Do not abut the pleura; usually central. | | Skin Folds | Thick, dark lines. | Often extend outside the lung field; artifacts of positioning. | | Subsegmental Atelectasis | Linear, often horizontal. | Often associated with volume loss; may shift fissures. | | Pleural Thickening | Broad, continuous. | Follows the rib contour; often blunts the costophrenic angle. |

While often associated with acute heart failure, they can be "evanescent," meaning they disappear quickly as the patient is treated and fluid is cleared. Conversely, may indicate permanent changes, such as fibrosis or hemosiderin deposition from recurrent edema. Common Causes of Kerley B Lines cxr kerley b lines