Pathological findings

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Three general Membranes!

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Presentation transcript:

Pathological findings Pathological findings. a) Photomicrograph of parietal and visceral symphysis after a talc pleurodesis (haematoxylin–eosin staining, 5× magnification). 1: chest wall fat tissue; 2: chest wall muscle layer; 3: foreign body granuloma with particle of talc insi... Pathological findings. a) Photomicrograph of parietal and visceral symphysis after a talc pleurodesis (haematoxylin–eosin staining, 5× magnification). 1: chest wall fat tissue; 2: chest wall muscle layer; 3: foreign body granuloma with particle of talc inside; 4: lung parenchyma. Note the absence of differentiation between both pleura and the presence of talc particle with a foreign body reaction. b) Photomicrograph of normal parietal pleura without a sign of adhesion (haematoxylin–eosin staining, 10× magnification). 1: muscle; 2: connective tissue; 3: mesothelial cell sheet of the parietal pleura. Note the integrity of the layer. c) Photomicrograph of normal visceral pleura without signs of adhesion (haematoxylin–eosin staining, 10× magnification). 1: lung parenchyma; 2: mesothelial cell sheet of the visceral pleura. d) Finely cut section of 7 μm thickness stained with haematoxylin–eosin representing a pleural symphysis after talc application. 1: muscle; 2: connective tissue; 3: lung parenchyma. e) Photomicrograph of a foreign body granuloma with particle of talc inside (trichrome staining, 10× magnification), corresponding to the region within the white rectangle in d). f) Photomicrograph of sterile and calibrated talc particle, corresponding to the region within the black rectangle in e). Note the presence of reactive cells all around the particles (trichrome staining, 40× magnification). g) Photomicrograph with polarised filter highlighting the particles of talc. Rachid Tazi-Mezalek et al. ERJ Open Res 2018;4:00158-2017 ©2018 by European Respiratory Society