Pathology and diagnosis of renal non-AL amyloidosis.

Renal amyloidosis is characterized by acellular Congo red positive deposits in the glomeruli, interstitium and/or arteries. Light chain restriction on immunofluorescence studies is present in AL-amyloidosis, the most common type of amyloidosis involving the kidney. The detection of Congo red positive deposits coupled with negative immunofluorescence studies… (More)