| Feature | Kerley A lines | Kerley B lines | |--------|----------------|----------------| | Length | Long (2–6 cm) | Short (<2 cm) | | Location | Upper zones, radiating from hilum | Peripheral, basal, perpendicular to pleura | | Most common in | Acute pulmonary edema (but less common than B) | Chronic / acute interstitial edema |
= long, upper lobe, hilar radiation → think interstitial edema (heart failure) or lymphangitic spread of cancer . Less common than Kerley B. Good specificity when present acutely. kerley a line
Symptoms Associated with Kerley B Lines
Diagnosis and Treatment