Mimicking Lymphoma: A Rare Case of Extramedullary Plasmacytoma in Lymph Nodes on 18 F-FDG PET/CT.
case_report · Level V
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- Record sourced from PubMed, PMID 40644587.
- Also identified by DOI 10.1097/RLU.0000000000006041.
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Abstract
Extramedullary plasmacytoma involving multiple lymph nodes is extremely rare. We report FDG PET/CT findings of multiple extramedullary plasmacytomas involving lymph nodes in a 71-year-old man. A chest CT scan revealed multiple enlarged lymph nodes in the right supraclavicular region, hilum, and mediastinum, merging into several soft tissue masses suggestive of lymphoma. On FDG PET/CT, these masses demonstrated intense 18 F-FDG uptake, mimicking aggressive lymphoma. No other abnormal tracer uptake was identified. Biopsy of the right supraclavicular lymph node confirmed the diagnosis of plasmacytoma.
Medical subject headings
- Plasmacytoma
- Fluorodeoxyglucose F18
- Lymph Nodes
- Lymphoma
- Positron Emission Tomography Computed Tomography
- Tomography, X-Ray Computed
- Positron-Emission Tomography