
- Published: February 28, 2020
- By: Tiffany Caza, MD
- Tags: clone, immunofixation, Monoclonal gammopathy of renal significance, PGMID, SPEP, UPEP
Small destructive B cell or plasma cell clones may be responsible for disease development. The above painting shows normal bone marrow, containing erythroid and myeloid precursors at various stages of maturation and normal trabeculae. Bone marrow biopsies may be performed to evaluate for a lymphoid or plasma cell clone in patients with monoclonal gammopathies of undetermined significance (MGUS) and in work-up of patients found to have a monoclonal gammopathy of renal significance (MRGS). Monoclonal gammopathies of renal significance occur when light chain restriction within a kidney biopsy is thought to be responsible for the patient's renal dysfunction, which is usually...