One patient with negative findings following LUS was
positive with CR. The presence of air bronchograms (multiple hyperechoic inclusions
within the pneumonic lesions) was found in 26 of the 28 pneumonias. Instead, the
fluid bronchograms, characterized by anechoic or hypoechoic tubular structures in the
bronchial tree, were found in 8 of the 28 cases of pneumonia.