RT Book, Section A1 Lee, Hans C. A1 Patel, Krina A1 Kongtim, Piyanuch A1 Parmar, Simrit A1 Lin, Pei A1 Qazilbash, Muzaffar H. A1 Thomas, Sheeba A1 Manasanch, Elisabet E. A2 Kantarjian, Hagop M. A2 Wolff, Robert A. SR Print(0) ID 1126741074 T1 Multiple Myeloma and Other Plasma Cell Dyscrasias T2 The MD Anderson Manual of Medical Oncology, 3e YR 2016 FD 2016 PB McGraw-Hill Medical PP New York, NY SN 9780071847940 LK hemonc.mhmedical.com/content.aspx?aid=1126741074 RD 2024/04/23 AB Plasma cell dyscrasias are heterogeneous disorders arising from the proliferation of a monoclonal population of plasma cells. Some of these disorders can present serendipitously as benign processes that can be observed; others are highly aggressive and require immediate intervention. The most common plasma cell dyscrasia is monoclonal gammopathy of undetermined significance (MGUS), a benign condition that can be observed. Related disorders include smoldering multiple myeloma (SMM), multiple myeloma (MM), solitary plasmacytoma of the bone, extramedullary plasmacytoma, Waldenström macroglobulinemia (WM), primary amyloid light-chain (AL) amyloidosis, heavy-chain disease, POEMS (polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin changes) syndrome, and the recently recognized TEMPI (telangiectasias, elevated erythropoietin and erythrocytosis, monoclonal gammopathy, perinephric fluid collection, and intrapulmonary shunting) syndrome. The spectrum of MGUS, SMM, and MM represents a natural progression of the same disease. This chapter focuses on the etiology, genetics, biology, diagnosis, clinical features, and current therapy of MM and other plasma cell disorders.