Central thin interstitial lines a number of centimeters long extending away from the hila (but not representing vessels) are known as what?
Kerley A lines.
What are the peripheral 2 - 3 cm lines known as?
Kerley B lines when seen abutting the pleura laterally. On lateral chest x-rays the same lines seen in the retrosternal location are known as Kerley D lines.
What are Kerley C lines?
The same process as Kerley A, B and D lines, but not reaching the pleura.
Single lead permanent pacemaker (PPM) in situ. The heart is enlarged and there is marked prominence of the interstitial lines. Minimal blunting of the left costophrenic angle.