PMC7543114_01
Lung histological findings: (a) acute emphysema; (b) focal endoalveolar
edema; (c) septal edema (arrows); (d) lymphocytic, monocytic and
eosinophilic peribronchial infiltration (arrows) associated with
peribronchial parietal muscle thickening.
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PMC7543114_01_10.1177_2058738420950579-fig1.jpg
fig1-2058738420950579
Intraparenchymal hemorrhages on the spleen and adrenal glands were observed (Figure 1).
Lung immunohistochemical findings: (a-d) tryptase immunoreaction (+++) (brown
cell reactions) with impressive response of the mast-cells in the
peribronchial area (arrows) and evident degranulation phenomena (red
arrows).
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PMC7543114_01_10.1177_2058738420950579-fig2.jpg
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Pulmonary mast cells were identified and quantified and a great number of degranulating mast cells with tryptase-positive material outside were observed (Figure 2).