Light Chain Deposition Disease (LCDD) is a relatively frequent renal disease associated with dysproteinemia. Although the light chain deposits can be widespread, the kidney is the most frequently involved organ, and renal involvement can dominate the clinical condition. The morphological features of LCDD can be recognized by light microscopy; however, the diagnosis can be made certain only by immunofluorescence microscopy, using antisera to kappa and lambda chains, and by electron microscopy.