case_images: PMC4929367_01
case_images: a Hematoxylin and eosin stain illustrating fibrosis and chronic inflammation. x40. b Tissue staining positive for IgG4 plasma cells. x100.
case_images: crg-0010-0063-g01.jpg
case_images: PMC4929367_01_crg-0010-0063-g01.jpg
case_images: F1
case_images: The histologic specimens are shown in figure 1a and 1b.