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Updated: Mar 29, 2026

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Summary
This summary is machine-generated.

Updated diagnostic criteria for multiple myeloma (MM) enable earlier detection using biomarkers and advanced imaging. This facilitates timely treatment to prevent organ damage and improves management of smoldering MM (SMM).

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Area of Science:

  • Hematology
  • Oncology
  • Clinical Pathology

Background:

  • Multiple myeloma (MM) is a plasma cell malignancy historically diagnosed by end-organ damage (CRAB features).
  • The 2014 International Myeloma Working Group (IMWG) update introduced biomarkers for earlier MM diagnosis.
  • Modern imaging, including CT and PET-CT, is now utilized for diagnosing MM bone disease.

Purpose of the Study:

  • To review revisions in diagnostic criteria for multiple myeloma (MM) and related disorders.
  • To discuss the updated diagnostic criteria for smoldering multiple myeloma (SMM).
  • To outline management strategies for low- and high-risk SMM based on prognostic factors.

Main Methods:

  • Review of updated diagnostic criteria for multiple myeloma (MM) and smoldering multiple myeloma (SMM).
  • Inclusion of biomarker-based diagnostics and advanced imaging (CT, PET-CT) in MM diagnosis.
  • Risk-stratification of SMM using specific prognostic factors.

Main Results:

  • The 2014 IMWG criteria allow for earlier MM diagnosis in patients without CRAB features.
  • Advanced imaging enhances the diagnosis of MM bone disease.
  • Identification of high-risk SMM with a 25% annual progression risk to MM is possible.

Conclusions:

  • Updated MM diagnostic criteria facilitate early detection and intervention, preventing end-organ damage.
  • Revised criteria for SMM enable better risk stratification and targeted management.
  • Prognostic factors are crucial for identifying high-risk SMM patients requiring closer monitoring and treatment.