In the (dyspnea, orthopnea, elevated jugular pressure):
Kerley lines are not an all-or-nothing sign. They are a graded marker of interstitial fluid . Recognizing them—especially the short, peripheral Kerley B lines—allows early diagnosis of left ventricular failure, guiding diuretic therapy before the patient develops florid pulmonary edema requiring intensive care. kerley lines x ray
| Feature | Kerley A Lines | Kerley B Lines | Kerley C Lines | | :--- | :--- | :--- | :--- | | | Long (2–6 cm) | Short (1–2 cm) | Reticular/Net-like | | Orientation | Radiating from hilum | Perpendicular to pleura | Crisscrossing | | Location | Upper zones | Lower zones / Costophrenic angles | Lower zones | | Cause | Deep lymphatic distension | Septal edema/thickening | Septal edema (view en face) | | Feature | Kerley A Lines | Kerley