"Bilateral lower zone Kerley B lines present. Findings consistent with interstitial pulmonary edema. Mild cardiomegaly is also noted."
A 68-year-old with a history of hypertension presents with sudden shortness of breath. Oxygen saturation is 88% on room air. The chest X-ray shows cardiomegaly, small bilateral pleural effusions, and . Diagnosis: Acute on chronic heart failure with interstitial edema. Treatment: IV furosemide and afterload reduction. Repeat X-ray in 24 hours shows resolution of Kerley B lines. kerley b lines