Unilateral Pulmonary Edema

• unilateral pulmonary edema is a well recognized and well documented entity
• although there are several causes, the most likely scenarios for EPs are severe mitral valve insufficiency, aortic dissection (with compression of the pulmonary artery), airway obstruction, and heroin use
• even though radiology will read the xray as likely pneumonia, if the story/exam fit with edema then treat as such