Conclusion
We presented a one-of-a-kind case of an SLR involving only the kidney
and secondary to rituximab in a 60-year-old patient after r-CHOP for
mantle cell lymphoma. Clinicians should be aware of this paradoxical
class effect and prolonged monitoring of renal function should be
recommended during the follow-up of patients after the end of treatment
with rituximab.
Early renal biopsy is indispensable for fast and adequate diagnosis,
knowing that the pathology would respond well to oral corticosteroid
therapy.