An Unusual Case of Multiple Myeloma with Light-Chain Cast Nephropathy Secondary to a Very Large Plasmacytoma without Bone Marrow Involvement

<div>H&amp;E stain of renal biopsy revealing atypical glassy eosinophilic casts associated with cellular reaction in acutely injured tubules (a). Immunofluorescence on renal biopsy is negative for kappa free light chains (b) but shows 2–3+ staining in the atypical casts for lambda free light chains (c).</div>

Case Reports in Hematology

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Figure 2

Figure 2: An Unusual Case of Multiple Myeloma with Light-Chain Cast Nephropathy Secondary to a Very Large Plasmacytoma without Bone Marrow Involvement 

Figure 2 | An Unusual Case of Multiple Myeloma with Light-Chain Cast Nephropathy Secondary to a Very Large Plasmacytoma without Bone Marrow Involvement 