Abstract
Objectives
To compare the diagnostic performance of whole-body MRI (WBMRI) with haematological parameters for detecting persistent or relapsing disease in patients with multiple myeloma after stem cell transplantation.
Methods
Sixty-six WBMRI acquisitions were performed in 33 patients with multiple myeloma at two time points after stem cell transplantation. Extent of disease and inter-test dynamics of intra- and extramedullary myeloma manifestations were compared (kappa statistics) with Uniform Response Criteria, comprising haematological parameters.
Results
Using data from 66 sequential WBMRI acquisitions in 33 patients, 10 patients (30.3 %) were classified as having progressive disease and 23 (69.7 %) as being in remission. Eight (80 %) of the ten patients with progressive disease revealed intramedullary lesions, and two patients (20 %) had intra- and extramedullary lesions. WBMRI and laboratory tests were concordant in 26/33 (78.8 %) patients. We found an agreement of 51.2 %, 95 % confidence interval 19.8 %-82.6 %, between results from WBMRI and haematological parameters. WBMRI had a sensitivity of 63.6 %, specificity of 86.4 %, PPV of 70.0 %, NPV of 82.6 % and accuracy of 78.8 % for detection of remission.
Conclusions
WBMRI allows the detection and exact localisation of intra- and extramedullary myeloma manifestations after stem cell transplantation, but shows only moderate agreement with routinely performed laboratory tests for determination of remission.
Key Points
• Whole body magnetic resonance imaging (WBMRI) is increasingly used for oncological purposes
• WBMRI allows localisation of intra- and extramedullary myeloma manifestations after SCT
• However, WBMRI and serum analyses do not fully concur when assessing response
• Thus, WBMRI offers limited incremental value over laboratory tests to determine remission
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Abbreviations
- WBMRI:
-
whole-body magnetic resonance imaging
- MRI:
-
magnetic resonance imaging
- SCT:
-
stem cell transplantation
- MM:
-
multiple myeloma
- CR:
-
complete remission
- PD:
-
progressive disease
- PR:
-
partial remission
- SD:
-
stable disease
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Bannas, P., Hentschel, H.B., Bley, T.A. et al. Diagnostic performance of whole-body MRI for the detection of persistent or relapsing disease in multiple myeloma after stem cell transplantation. Eur Radiol 22, 2007–2012 (2012). https://doi.org/10.1007/s00330-012-2445-y
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DOI: https://doi.org/10.1007/s00330-012-2445-y