<unk>  are a sign seen on chest radiographs with interstitial pulmonary edema. They are thin linear pulmonary opacities caused by fluid or cellular infiltration into the interstitium of the lungs. They are named after Irish neurologist and radiologist Peter<unk> .
Kerley lines
Mees' lines
Stenvers projection
Loop mark
Cramp-ring
Gilula's lines
Surfer's knots
Beau's lines