Biopsy versus FDG PET/CT in the initial evaluation of bone marrow involvement in pediatric lymphoma patients
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The objective is to assess the role of 18F-2-fluoro-2-deoxy-D-glucose (FDG) positron emission tomography (PET)/CT versus bone marrow biopsy (BMB) in the initial evaluation of bone marrow (BM) involvement in pediatric lymphoma patients.
Fifty-four pediatric patients with pathologically proven lymphoma [31 Hodgkin’s disease (HD), 23 non-Hodgkin’s lymphoma (NHL)] were included in this study. All patients had soft tissue biopsy and BMB and had FDG PET/CT scans within 2 weeks of biopsy.
Among the 31 HD patients, FDG PET/CT revealed positive BM involvement in 4 patients, while BMB revealed BM involvement in 2 patients who were also positive on FDG PET/CT imaging. Among the 23 NHL patients, FDG PET/CT revealed positive BM involvement in 8 patients, while biopsy revealed BM involvement in 5 patients on initial studies (4 of them were also positive on FDG PET/CT, and 1 was BMB positive but was negative on FDG PET/CT), plus 1 false-negative BMB study initially but positive on repeat biopsy after FDG PET/CT. The overall sensitivity of detecting BM involvement by lymphoma was 92 and 54% (p < 0.05) for FDG PET/CT and BMB, respectively. It is noted that there were more positive BMB findings in patients with abnormal FDG activities seen in the biopsy sites on PET/CT.
Our study demonstrates that FDG PET/CT has high sensitivity and accuracy and a substantial complementary value to BMB in the initial diagnosis of pediatric lymphoma, and should be employed as a first-line study.
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- Biopsy versus FDG PET/CT in the initial evaluation of bone marrow involvement in pediatric lymphoma patients
European Journal of Nuclear Medicine and Molecular Imaging
Volume 38, Issue 8 , pp 1469-1476
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- FDG PET/CT
- Bone marrow biopsy
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- Author Affiliations
- 1. Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce St., Philadelphia, PA, 19104, USA
- 2. Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland Medical Center, Baltimore, MD, 21201, USA
- 3. Children’s Hospital of Philadelphia, Philadelphia, PA, 19104, USA