Table 1.

Teaching points

Amyloid deposition can cause glomerular crescents, which have been observed in up to 13% of renal amyloidosis cases

Amyloid should be on the differential diagnosis for any crescentic glomerulonephritis, especially with negative serologic workup

Congo red staining can be used to differentiate capillary loop fibrin from amyloid deposits

Solid tumors are a rare association with amyloid A amyloidosis (AA amyloidosis)