Abstract
ObjectiveDiffuse large B-cell lymphoma (DLBCL) is often associated with bone marrow infiltration, and 2-deoxy-2-(18F) fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) has potential diagnostic significance for bone marrow infiltration in DLBCL. MethodsA total of 102 patients diagnosed with DLBCL between September 2019 and August 2022 were included. Bone marrow biopsy and 18F-FDG PET/CT examinations were performed at the time of initial diagnosis. Kappa tests were used to evaluate the agreement of 18F-FDG PET/CT with the gold standard, and the imaging features of DLBCL bone marrow infiltration on PET/CT were described. ResultsThe total detection rate of bone marrow infiltration was not significantly different between PET/CT and primary bone marrow biopsy (P = 0.302) or between the two bone marrow biopsies (P = 0.826). The sensitivity, specificity, and Youden index of PET/CT for the diagnosis of DLBCL bone marrow infiltration were 0.923 (95% CI, 0.759–0.979), 0.934 (95% CI, 0.855–0.972), and 0.857, respectively. Conclusion18F-FDG PET/CT has a comparable efficiency in the diagnosis of DLBCL bone marrow infiltration. PET/CT-guided bone marrow biopsy can reduce the misdiagnosis of DLBCL bone marrow infiltration.
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