Incidence, characteristics, and outcome of solitary plasmacytoma and plasma cell leukemia. Population-based data from the Swedish Myeloma Register

Research output: Contribution to journalArticle


Solitary plasmacytoma (SP) and plasma cell leukemia (PCL) are uncommon (3-6%) types of plasma cell disease. The risk of progression to symptomatic multiple myeloma (MM) is probably important for the outcome of SP. PCL is rare and has a dismal outcome. In this study, we report on incidence and survival in PCL/SP, and progression to MM in SP, using the prospective observational Swedish Multiple Myeloma Register designed to document all newly diagnosed plasma cell diseases in Sweden since 2008. Both solitary bone plasmacytoma (SBP) (n=124) and extramedullary plasmacytoma (EMP) (n=67) have better overall survival (OS) than MM (n=3549). Progression to MM was higher in SBP than in EMP (35% and 7% at 2 years, respectively), but this did not translate into better survival in EMP. In spite of treatment developments, the OS of primary PCL is still dismal (median of 11 months, 0% at 5 years). Hence, there is a great need for diagnostic and treatment guidelines as well as prospective studies addressing the role for alternative treatment options, such as allogeneic stem cell transplantation and monoclonal antibodies in the treatment of PCL.


  • Hareth Nahi
  • Anna Genell
  • Göran Wålinder
  • Katarina Uttervall
  • Gunnar Juliusson
  • Forsberg Karin
  • Markus Hansson
  • Ronald Svensson
  • Olle Linder
  • Kristina Carlson
  • Bo Björkstrand
  • Sigurdur Y Kristinsson
  • Ulf-Henrik Mellqvist
  • Cecilie Blimark
  • Ingemar Turesson
External organisations
  • Skåne University Hospital
  • Karolinska Institutet
  • Regional Cancer Center Western Sweden
  • Umeå University
  • Linköping University Hospital
  • Örebro University Hospital
  • Uppsala University Hospital
  • South Elfsborg Hospital
  • Sahlgrenska University Hospital
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Hematology


  • Multiple myeloma, Plasma cell neoplasms
Original languageEnglish
Pages (from-to)216-222
JournalEuropean Journal of Haematology
Issue number3
Publication statusPublished - 2017 Sep
Publication categoryResearch