What Are Kerley Lines?

The kerley line is an X-ray sign. The lesion causes exudate around the pulmonary blood vessels, causing the blood vessel texture to lose its sharp outline and become blurred. The effusion in the lobular space makes the space thicker and forms a lobular space line, which is kerley. line.

Kerley Line

Right!

The kerley line is an X-ray sign. The lesion causes exudate around the pulmonary blood vessels, causing the blood vessel texture to lose its sharp outline and become blurred. The effusion in the lobular space makes the space thicker and forms a lobular space line, which is kerley. line.

There are abnormal linear shadows in the lung field, which are divided into three types:

1. The A line is a radial line shadow outward from the hilum, generally about 5cm-6cm in length, up to 10cm in individual, and about 0.5mm-1mm in width. It is denser and more common in the upper lung field.

2. The horizontal line of the outer end of the B line against the edge of the pleura is about 2cm to 3cm long and about 1mm to 3mm wide. Its density is lower than that of the A line, and it is more common in the costal corner area. Kerley B line is due to the widening of the interlobular septum caused by pulmonary interstitial edema. Horizontal line shadows can form on the outside of the lower field of the two lungs, generally perpendicular to the lateral costal pleura.

3 The C line is intertwined into a grid-like linear shadow, which is more common in the lower and middle lung fields.

The pathological basis for its formation is generally thought to be due to the thickening of the lobular interval, so it is now collectively referred to as the interval line