Kerley lines are named after Peter J. Kerley, a British radiologist, who identified types of septal lines on chest radiographs in patients with congestive heart failure.
Type | Description |
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Kerley A lines | linear opacities usually 2 - 6 cm long radiating from the hila into the periphery, caused by distention of lymphatic channels between perivenous and peribronchovascular lymphatics |
Kerley B lines |
Stage | Description |
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I. | Perihilous streaky opacities, incipient interstitial edema |
II. | Diffuse, more or less homogeneous opacities, event. batwing appearance |
III. | Increased opacity of shadows due to edema of bronchial wall, event. bronchogram sign |
IV. | Confluent shadows of increasing size |