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 2. 20× Masson’s Trichrome. The thyroid parenchyma is almost completely replaced by blue collagen fibers in keloid-like bands (left arrow). Residual colloid follicles are present (right arrow).