Question: A 68-year-old patient who consulted for edema and asthenia. In the analytical carried out, creatinine of 5 mg / dl, hemoglobin of 10 gr / dl and marked serum hypogammaglobulinemia at the expense of IgG, IgA and IgM are observed. A urinalysis reveals the presence of kappa light chains. What is your diagnostic suspicion? 
 Options:  <1> Disease due to deposit of light chains kappa. <2> Nephrotic syndrome. <3> Amyloidosis <4> IgA myeloma with Bence Jones preoteinuria. <5> Myeloma of light chains.
5