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. 2022 Jul 31;39:101715. doi: 10.1016/j.rmcr.2022.101715

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© 2022 The Author(s)

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Fig. 2 — (A), View of the first surgical biopsy in 2013, which shows lymphoplasmacyte infiltration into the interstitium, peribronchovascular sheath, and subpleura (20x). Inset: High-power view showing storiform fibrosis (100x). (B-1), HE staining in the first surgical biopsy (x200). (B-2), IgG4 staining in the first surgical biopsy (x200). (B-3), IgG staining in the first surgical biopsy (x200). An IgG4/IgG-ratio of 50%. (C), View of the second surgical biopsy in 2016, which shows lamellar hyalinized collagen bundles around bronchovascular bundles with an associated dense rim of plasma cells and lymphocytes (100x).

Fig. 2 — (A), View of the first surgical biopsy in 2013, which shows lymphoplasmacyte infiltration into the interstitium, peribronchovascular sheath, and subpleura (20x). Inset: High-power view showing storiform fibrosis (100x). (B-1), HE staining in the first surgical biopsy (x200). (B-2), IgG4 staining in the first surgical biopsy (x200). (B-3), IgG staining in the first surgical biopsy (x200). An IgG4/IgG-ratio of 50%. (C), View of the second surgical biopsy in 2016, which shows lamellar hyalinized collagen bundles around bronchovascular bundles with an associated dense rim of plasma cells and lymphocytes (100x).