12 November 2020
: Case report
IgG4-Related Fibrous Thyroiditis (Riedel’s Thyroiditis): A Case Report
Challenging differential diagnosis, Rare disease, Educational Purpose (only if useful for a systematic review or synthesis)
Valeria Navarro-Sánchez1BEF, Luis Antonio Marín-Castañeda1BEF, Cecilia A. Gallegos2BDF, Oscar Quiroz3BCD, Miguel Ahumada-Ayala14BDEF*DOI: 10.12659/AJCR.928046
Am J Case Rep 2020; 21:e928046
Figure 3. Immunostaining for thyroglobulin and immunoglobulin G4 (IgG). (A) Residual thyroid follicular epithelium is highlighted with thyroglobulin-positive staining. (B) Immunostaining for IgG4 shows the presence of IgG4-positive plasma cells (black arrow).