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. 2016 May 28;4(4):e00168. doi: 10.1002/rcr2.168

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© 2016 The Authors. Respirology Case Reports published by John Wiley & Sons Australia, Ltd on behalf of The Asian Pacific Society of Respirology

This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Histopathology of the right S4. (A) Panoramic view of the right S4. Marked lymphoplasmacytic infiltration in the interlobular septa and alveolar walls with fibrosis and lymphoid follicles. (Hematoxylin‐eosin, ×1, bar 2 mm). (B) Prominent infiltration of plasma cells in the alveoli with scattered Russell bodies. (Hematoxylin‐eosin, ×20) (square on A). (C) κ‐positive plasma cells. (D) λ‐positive plasma cells. (×20) There was no monoclonality. (E) Granulomatous involvement of interlobular vein with disruption of elastic fibers. (Elastic van Gieson, ×10).