CHF with upper zone redistribution

Findings
CHF frequently presents radiologically with cardiomegaly and/or pleural effusions. The effusions may be bilateral. When unilateral, the right side predominates. The lung fields may be affected: early CHF results in upper zone redistribution; worsening CHF causes interstitial edema; further progression results in alveolar edema.This patient presents with upper zone redistribution.


http://eradiology.bidmc.harvard.edu/Classics/item.aspx?section=Cardiovascular&labelpk=edde29d6-1bd5-4bf2-a24a-e06762273d11&pk=963d5ea7-619f-42d6-a99c-b57828f773de