Erschienen in:
01.08.2013 | Oncology
Whole-body MRI for the detection of bone marrow involvement in lymphoma: prospective study in 116 patients and comparison with FDG-PET
verfasst von:
Hugo J. A. Adams, Thomas C. Kwee, Malou A. Vermoolen, Bart de Keizer, John M. H. de Klerk, Judit A. Adam, Rob Fijnheer, Marie José Kersten, Jaap Stoker, Rutger A. J. Nievelstein
Erschienen in:
European Radiology
|
Ausgabe 8/2013
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Abstract
Objective
To assess and compare the value of whole-body MRI with FDG-PET for detecting bone marrow involvement in lymphoma.
Methods
A total of 116 patients with newly diagnosed lymphoma prospectively underwent whole-body MRI and blind bone marrow biopsy (BMB) of the posterior iliac crest. Of 116 patients, 80 also underwent FDG-PET. Patient-based sensitivities of whole-body MRI for detecting bone marrow involvement were calculated using BMB as reference standard and compared with FDG-PET in aggressive and indolent lymphomas separately.
Results
Sensitivity of whole-body MRI in all lymphomas was 45.5 % [95 % confidence interval (CI): 29.8–62.0 %]. Sensitivity of whole-body MRI in aggressive lymphoma [88.9 % (95 % CI: 54.3–100 %)] was significantly higher (P = 0.0029) than that in indolent lymphoma [23.5 % (95 % CI: 9.1–47.8 %)]. Sensitivity of FDG-PET in aggressive lymphoma [83.3 % (95 % CI: 41.8–98.9 %)] was also significantly higher (P = 0.026) than that in indolent lymphoma [12.5 % (95 % CI: 0–49.2 %)]. There were no significant differences in sensitivity between whole-body MRI and FDG-PET (P = 1.00)
Conclusion
Sensitivity of whole-body MRI for detecting lymphomatous bone marrow involvement is too low to (partially) replace BMB. Sensitivity of whole-body MRI is significantly higher in aggressive lymphoma than in indolent lymphoma and is equal to FDG-PET in both entities.
Key Points
• Bone marrow involvement in lymphoma has prognostic and therapeutic implications.
• Blind bone marrow biopsy (BMB) is standard for bone marrow assessment.
• Neither whole-body MRI nor FDG-PET can yet replace BMB.
• Both techniques have higher sensitivity in aggressive than in indolent lymphoma.
• Both imaging techniques are complementary to BMB.