Tubulointerstitial Nephritis with IgM-positive Plasma Cells Requiring Temporary Hemodialysis.
Hisashi Furukawa, Tsutomu Inoue, Haruko Oba et al.
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From the abstract
A 63-year-old Japanese woman was diagnosed with severe kidney dysfunction that required hemodialysis. Testing revealed an elevated serum IgM level (2,650 mg/dL). A kidney biopsy revealed tubulointerstitial nephritis with the infiltration of IgM and CD138 positive cells into the tubulointerstitium.