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Published on: March 30, 2018
High 18F-fluorodeoxyglucose uptake in primary bilateral adrenal diffuse large B-cell lymphomas with nongerminal
Rationale:
Bilateral adrenal diffuse large B-cell lymphoma, nongerminal center B-cell phenotype (non-GCB DLBCL), is an uncommon malignancy that exhibits rapid development. Fluorine-18-fluorodeoxyglucose position emission tomography/computed tomography (CT) is extremely sensitive in distinguishing highly malignant tumors from benign tumors.
Patient Concerns:
We report a case of non-GCB DLBCL showing significantly high uptake of 18F-FDG on PET/CT examination.
Diagnoses:
Histopathological and immunohistochemical examination further confirmed that the bilateral adrenal masses were non-GCB DLBCL.
Interventions:
The maximal standardized uptake value (SUVmax) of the adrenal lesion was 17.2. Abnormal 18F-FDG uptake was observed in a retroperitoneal lymph node, the SUVmax of which was 14.2.
Outcomes:
He was administered CHOP chemotherapy without rituximab due to high costs.His therapeutic effect and survival time could not be tracked due to patient privacy.
Lessons:
non-GCB DLBCL is a rare malignancy.18F-FDG PET/CT examination can distinguish benign from malignant adrenal lesions based on increased FDG uptake. It is a noninvasive method to diagnose malignant adrenal tumors.
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