A Case of Multiple Myeloma Diagnosed by Renal Biopsy

Abstract Multiple myeloma is a malignant disease that results in the proliferation of a single plasma cell clone. The clinical manifestations are anemia, bone pain, bone fractures, hypercalcemia, hypergammaglobulinemia, increased erythrocyte sedimentation rate, rouleaux formation on the peripheral blood smear and rarely increased serum viscosity. Rarely cast nephropathy associated with acute renal failure may be the first finding of multiple myeloma. We report a clinical case of a 44-year-old female patient who presented with acute renal failure due to cast nephropathy without myeloma’s typical clinical and laboratory findings. In the clinical case presented here, we highlight that multiple myeloma can be presented with acute renal failure and without any other typical symptoms.