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A. Interstitial lung disease (ILD) – pulmonary fibrosis; numerous B-line artifacts forming patterns corresponding to alveolar-interstitial syndromes and the white lung sign (→←) are visible in the lower fields of both lungs – the latter is seen regionally; an abnormal pleural line, blurred and with decreased echogenicity (↓); B. ILD – active lesions (alveolitis); alveolar-interstitial syndromes and the white lung sign arising from the echogenic pleural line. A convex probe
