<prompt> Kerley B lines are seen inPulmonary edemaCongenital hea diseaseSarcoidosisAll of the above  <response>: Kerley A lines are 1-2mm non- branching lines radiating from the hilum, 2-6 cm long. They represent thickened deep interlobular septa. Kerley B lines are transverse non- branching 1-2 mm lines at the lung bases perpendicular to the pleura 1-3cm long. They represent thickened interlobular septa. 