6Serefhanoglu S, Sayinalp N, Haznedaroglu I C, et al. Extr- amedullary plasmacytomas of the thyroid and pericardium as initial presentation of multiple myeloma [ J ]. Ann Hematol, 2008,87 (10) :853-854.
7Petersen S L, Wagner A, Gimsing P. Cerebral and meningeal multiple myeloma after autologous stem cell transplantation. A case report and review of the literature[J]. Am J Hematol, 1999,62 (4) :228-233.