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International Journal of Rheumatology
Volume 2012 (2012), Article ID 121702, 6 pages
http://dx.doi.org/10.1155/2012/121702
Research Article

Increased IgG4-Positive Plasma Cells in Granulomatosis with Polyangiitis: A Diagnostic Pitfall of IgG4-Related Disease

1Division of Anatomic Pathology, Mayo Clinic, Rochester, MN 55905, USA
2Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN 55905, USA

Received 1 December 2011; Revised 15 February 2012; Accepted 16 February 2012

Academic Editor: Yoh Zen

Copyright © 2012 Sing Yun Chang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

How to Cite this Article

Sing Yun Chang, Karina Keogh, Jean E. Lewis, Jay H. Ryu, and Eunhee S. Yi, “Increased IgG4-Positive Plasma Cells in Granulomatosis with Polyangiitis: A Diagnostic Pitfall of IgG4-Related Disease,” International Journal of Rheumatology, vol. 2012, Article ID 121702, 6 pages, 2012. doi:10.1155/2012/121702