Kerley's B Lines [upd]

They are perpendicular to the pleural surface and extend all the way to the lung edge.

Fibrosis, sarcoidosis, and certain pneumonias (viral or mycoplasma) can also trigger their appearance. Kerley B vs. Other Septal Lines kerley's b lines

The presence of Kerley B lines typically signals that pulmonary capillary wedge pressure has reached , forcing fluid into the interstitium. They are perpendicular to the pleural surface and

Kerley's B lines are an important radiological finding, as they can: horizontal lines at the lung periphery

Kerley's B lines are named after the British radiologist Peter Kerley, who first described them in 1933. These lines are short, horizontal lines at the lung periphery, typically seen at the costophrenic angles on a chest X-ray. They represent interstitial edema or fibrosis in the lung periphery.