Answer: B, Granulomatous TIN
The classic finding for renal sarcoidosis is that of a non-necrotizing granulomatous tubulointerstitial nephritis (Granulomatous TIN). However, on biopsy this finding is non-specific and thus the differential diagnosis would also include drug/hypersensitivity reaction, infections (i.e. mycobacterial, fungal), and autoimmune disease. Sarcoidosis is considered a diagnosis of exclusion and thus clinical correlation is required.
Quick note: This post is to be used for informational purposes only and does not constitute medical or health advice. Each person should consult their own doctor with respect to matters referenced. Arkana Laboratories assumes no liability for actions taken in reliance upon the information contained herein.