case_images: PMC4395824_01
case_images: Sarcoidosis. Inflammation comprising noncaseating epithelioid granulomas (asterisk, inset) and lymphocytes expands the tubulointerstitial compartment of the kidney and spares the glomerulus (mid-lower)
case_images: cop-0006-0101-g01.jpg
case_images: PMC4395824_01_cop-0006-0101-g01.jpg
case_images: F1
case_images: A renal biopsy was then performed demonstrating granulomatous interstitial nephritis and patchy interstitial fibrosis (fig. 1).
case_images: TINU. Mature lymphocytes and few eosinophils are noted in the mildly edematous interstitium; glomeruli are normal.
case_images: cop-0006-0101-g02.jpg
case_images: PMC4395824_01_cop-0006-0101-g02.jpg
case_images: F2
case_images: Biopsies from patients with TINU (fig. 2) infrequently demonstrate granulomas or multinucleated foreign body-type giant cells that can be associated with damaged tubules.