Do you recommend a kidney biopsy in a patient with myelodysplastic syndrome diagnosed two years prior who develops new onset proteinuria?  

The decision to perform a kidney biopsy on any patient should hinge around whether the diagnosis can be made non-invasively (very rare), whether the biopsy should not impose an undue risk to the patient, and if a change in treatment may result from the biopsy diagnosis.In MDS, a variety of lesions m...