Standard and novel imaging methods for multiple myeloma: correlates with prognostic laboratory variables including
Sarah Waheed1, Alan Mitchell, Saad Usmani
1Myeloma Institute for Research and Therapy, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
Haematologica
|June 27, 2012
Summary
Advanced imaging techniques like MRI and PET detect multiple myeloma bone lesions earlier than standard bone surveys. These methods correlate with disease aggressiveness and tumor burden, aiding in risk assessment for newly diagnosed patients.
Area of Science:
- Oncology
- Radiology
- Molecular Biology
Background:
- Multiple myeloma frequently causes debilitating osteolytic bone lesions.
- Standard bone surveys detect osteolytic lesions, but advanced imaging can identify bone marrow lesions earlier.
- Early detection and characterization of myeloma bone involvement are crucial for treatment planning.
Purpose of the Study:
- To analyze the association between metastatic bone surveys, magnetic resonance imaging (MRI), and positron emission tomography (PET) in detecting bone lesions in multiple myeloma.
- To correlate imaging findings with baseline laboratory variables and gene expression profiling (GEP)-defined risk in newly diagnosed myeloma patients.
Main Methods:
- Retrospective analysis of 303 newly diagnosed multiple myeloma patients from the Total Therapy 3 trial.
- Comparison of lesion detection rates and counts between bone surveys, MRI, and PET.
- Correlation of imaging findings with serum C-reactive protein, GEP-defined risk, and molecular subgroups.
Main Results:
- MRI and PET detected more focal bone marrow lesions than bone surveys, often before osteolytic changes were evident.
- Higher lesion counts on MRI and PET were associated with elevated C-reactive protein, GEP-defined high-risk status, and the proliferation subgroup.
- PET standardized uptake values correlated with GEP-defined high-risk disease and lesion burden.
Conclusions:
- All three imaging techniques (bone survey, MRI, PET) are associated with multiple myeloma tumor burden.
- Advanced imaging (MRI and PET) provides valuable insights into disease aggressiveness, particularly when correlated with GEP risk stratification.
- These findings support the use of advanced imaging for comprehensive assessment of myeloma bone disease.
