Not all horizontal lines are Kerley B lines. Radiologists must differentiate them from:
While most commonly associated with heart failure, Kerley B lines can appear in any condition that causes interstitial thickening. kerley b lines on cxr
Kerley B lines are a subtle but powerful radiographic sign. Recognizing them can shift your differential diagnosis from primary lung disease to systemic causes like heart failure or malignancy. In the emergency setting, spotting these fine peripheral lines may be the first clue to impending pulmonary edema—and a lifesaving opportunity for early intervention. Not all horizontal lines are Kerley B lines
Other conditions that can cause similar lung markings on CXR: Recognizing them can shift your differential diagnosis from
Normally, interlobular septa are too thin to be seen on CXR. However, when fluid accumulates in the interstitial space, the septa become thickened and opaque.
Kerley B lines are often associated with: