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Makis, William,Ciarallo, Anthony,Gonzalez-Verdecia, Milene,Probst, Stephan 대한핵의학회 2018 핵의학 분자영상 Vol.52 No.1
Systemic lupus erythematosus (SLE) is associated with a variety of inflammatory processes that can affect the lymph nodes, brain, kidneys, and spleen. We present two patients with SLE in whom SLE-associated conditions complicated interpretation of $^{18}F$-fluoro-2-deoxy-$\text\tiny{D}$-glucose ($^{18}F-FDG$) positron emission tomography/computed tomography (PET/CT) imaging of the lymph nodes and the spleen. The imaging findings mimicked lymphoma, but histopathological evaluation showed benign processes including reactive follicular hyperplasia in the lymph nodes, Kikuchi-Fujimoto disease in perisplenic lymph nodes, and inflammatory changes and lymphoid hyperplasia in the spleen.
William Makis,Anthony Ciarallo,Beatrice Wang,Milene Gonzalez-Verdecia,Stephan Probst 대한핵의학회 2017 핵의학 분자영상 Vol.51 No.3
A 67 year old woman with a 10 year history of rheumatoid arthritis (RA) treated with methotrexate and prednisone, presented with a 2 year history of worsening multiple cutaneous plaques of variable appearance. Two distinct skin lesions were biopsied to reveal a composite cutaneous lymphoma, possibly caused by long term methotrexate therapy. An [18F] fluoro-2-deoxy-D-glucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) was performed to stage the malignancy, and was later repeated to evaluate response to chemotherapy, which guided subsequent management. We present the PET/CT imaging findings of this very rare iatrogenic (methotrexate induced) immunodeficiencyassociated lymphoproliferative disorder.