Fig. 2From: Transbronchial cryobiopsy in unexplained, severe ARDS: a single center retrospective case seriesDiffuse alveolar damage—Hamman Rich Syndrome (A: 80x; B: 170x; C: 200x). a Initial formation of airspace granulation tissue plugs in alveolar ducts. b Accumulation of intra-alveolar macrophages. c Organizing /proliferative phase AIP/DAD with hyaline membranes and the very largeBack to article page