What is incorrect about Kerley’s lines?
A. Kerley’s A lines are caused by distention of anastomotic channels between peripheral and central lymphatics
B. Kerley’s B lines represent edema of the interlobular septa
C. Kerley’s C lines are dilated pulmonary veins
Answer: C
Kerley’s A lines are linear opacities extending from the periphery to the hila; they are caused by distention of anastomotic channels between peripheral and central lymphatics.
Kerley’s B lines are short horizontal lines situated perpendicularly to the pleural surface at the lung base; they represent edema of the interlobular septa.
Kerley’s C lines are reticular opacities at the lung base, representing Kerley’s B lines en face.
These radiologic signs and physical findings suggest cardiogenic pulmonary edema.
Reference
Kerley’s A, B, and C Lines. NEJM, Volume 360:1539 April 9, 2009 Number 15
Heitzman FR, et al. Kerlye’s interlobular septal lines: Roentgen pathologic correlaton. Am J Radiol, 1967, p 578 – 582