PMC6582060_01
A. Chest X-ray with perihilar congestion and bilateral basal interstitial infiltrate with signs of sternotomy closure by previous surgery. B, C, D. Chest CT scan showing zones of left partial atelectasis and mucus casts obstructing the left source bronchus, as well as a patchy interstitial infiltrate.
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Studies for hypercoagulability evaluation in addition to normal coagulation factors VIII, V, VII, X, XI and II were normal (see Fig. 1).
A. Hematoxylin and eosin staining represents acellular mucoid material. B. Expectorated mucoid material molding the bronchial tree. C. Movat pentachromic staining, the acellular mucoid material is represented in red. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
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Microscopically, with hematoxylin and eosin staining and Movat staining, acellular mucoid material was observed which confirms bronchial cast type II (Fig. 2).