15 February 2022
: Case report 
Late-Onset Metastatic Renal Cell Carcinoma to the Thyroid Gland: An Unusual Airway Emergency
Challenging differential diagnosis, Management of emergency care, Rare disease
Soraya Abdul-Hadi1ABCDEF*, Francis Daniel Beauchamp1ABCDEF, Jorge Cheverez-Ocasio2BCDE, Jeamarie Pascual-Marrero1ADE, Juan C. Portela-Arraiza1ADE, Maria Correa-Rivas2BCDEDOI: 10.12659/AJCR.934814
Am J Case Rep 2022; 23:e934814
Figure 4. (A) Note the nearly complete replacement of the thyroid by tumor cells with clear cytoplasm, distinct cytoplasmic membranes, and delicate network of thin vessels around tumor nests, H&E, 20×. (B) Pleomorphic and hyperchromatic cells, some with prominent eosinophilic nucleoli, H&E, 40×. (C) Residual thyroid follicles (at center) surrounded by nests of clear cell carcinoma tumor, H&E, 20×, and (D) At higher magnification, H&E, 60×.