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This video was taken at the left lung base of a patient with pneumonia. The lung is so densely consolidate and filled with purulent material that it appears to be a solid organ on ultrasound. The echodensity is similar to that of the liver, so this is sometimes referred to a hepatization. In this video, bright white lines in the consolidation can be seen moving with the respiratory cycle. These are referred to as dynamic air bronchograms and are thought to be caused by pus moving in airways, suggesting pneumonia as the etiology of the consolidation.