Patient is admitted to hospital for bilateral pneumonia; etiology confirmed Legionella pneumophila.

The ultrasound examination shows signs of alveolar consolidation („shred sign“). „Lung pulse“ is present - transmitted pulsation from the heart contractions and  the disappearance of „lung sliding“, a sign of exudative inflammation.

The „shred sign“ " is a non-homogeneous hypoechoic shredded structure, blurry, as if it has been shredded to demarcate the surrounding area.