Histopathologic examination shows numerous granulomas of epithelioid histiocytes surrounded by a dense infiltrate of lymphocytes (hematoxylin and eosin staining, x5 original magnification).

Photomicrograph of epididymal biopsy specimen that shows a high-power view of an epithelioid granuloma with incipient central necrosis.

Nonspecific granuloma — diffuse epithelioid-cell formation, with or without giant cells or fibrinoid necrosis, differing from the sarcoid reaction in the absence of pattern or definition of ...

A renal biopsy was obtained due to Stage 1 AKI and identified non-caseating granuloma on electron microscopy, raising concern for sarcoidosis. Hematoxylin and eosin staining revealed numerous ...