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Mimicking Lymphoma: A Rare Case of Extramedullary Plasmacytoma in Lymph Nodes on 18 F-FDG PET/CT
Shaoming Chen1,2,3, Qianqian Xue1,2,3, Zefang Lin1,2,3
1Department of Nuclear Medicine, the First Affiliated Hospital, Fujian Medical University, China.
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.
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