Spontaneous unilateral pulmonary edema.

A patient presented with wheezing, evidence of vascular congestion on physical examination, and leukocytosis. A chest x-ray film suggested pneumonia. When unilateral pulmonary edema was revealed on a repeat chest film, the patient was given diuretic therapy and responded favorably. This case thus differs from the usual pattern of symmetrical homogeneous density on the chest roentgenogram in pulmonary edema of cardiac origin.