case_images: PMC5763108_01
case_images: Paravertebral soft tissue mass (a) before and (b) after treatment with prednisone.
case_images: CRIRH2017-4716245.001.jpg
case_images: PMC5763108_01_CRIRH2017-4716245.001.jpg
case_images: fig1
case_images: A subsequent CT done 5 months later showed a decrease in the paraspinal mass (Figure 1).
case_images: The submandibular gland shows extensive lymphoplasmacytic infiltrate intermixed with prominent fibrosis.
case_images: CRIRH2017-4716245.002.jpg
case_images: PMC5763108_01_CRIRH2017-4716245.002.jpg
case_images: fig2
case_images: The paravertebral mass shows dense fibrosclerosis with increased lymphoplasmacytic infiltrates, and IgG4 plasma cells are slightly increased.
case_images: CRIRH2017-4716245.003.jpg
case_images: PMC5763108_01_CRIRH2017-4716245.003.jpg
case_images: fig3
case_images: Although staining for IgG and IgG4 was limited by the level of background staining and areas of crush artifact within the tissue, there was an increase of IgG4 plasma cells (Figure 3).