28 July 2020
: Case report 
A Case of Extranodal Rosai-Dorfman Disease Presenting as an Isolated Mass on the Base of the Tongue in a 57-Year-old Woman
Challenging differential diagnosis, Rare disease, Educational Purpose (only if useful for a systematic review or synthesis)
Joo Yeon Kim1ABCEF, Hye-kyung Shim2ABCDEF, Mi Ra Kim3ABCDE*DOI: 10.12659/AJCR.925716
Am J Case Rep 2020; 21:e925716
Figure 2. Histopathologic results of the microscopic examination. (A) At low magnification, a well demarcated nodular mass is seen and there is no evidence of lymph node within the excised specimen (H&E, 12.5× magnification). (B) Extensive inflammatory cell infiltration in the subepithelial stroma (H&E, 200× magnification). (C) A mixture of numerous histiocytes, plasma cells and a few neutrophils are identified (H&E, 400× magnification). (D) Enlarged histiocytes exhibiting characteristic emperipolesis (black arrow) (H&E, 400× magnification).