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  Indian J Med Microbiol
 

Figure 2: Maximum intensity projection image (a) shows faint F-18 fluoro-deoxy-glucose (FDG) uptake in mediastinal, b/l axillary lymph nodes and mild diffuse uptake in enlarged spleen Coronal images showing mild F-18 FDG uptake in enlarged spleen. Transaxial images showing mild F-18 FDG uptake in mediastinal lymph node (hottest lesion with maximum standardized uptake value [SUVmax-4.3]) and retroperitoneal lymph nodes (SUVmax-2.3). This image shows a rare case of diffuse large B cell lymphoma (DLBCL) with very low F-18 FDG uptake. Though DLBCL is considered routinely F-18 FDG avid about 3% of the cases with DLBCL can be lowly F-18 FDG avid.[3] This image also highlights the need of baseline scan to demonstrate F-18 FDG avidity of the involved lymph nodes for better assessment of response after chemotherapy

Figure 2: Maximum intensity projection image (a) shows faint F-18 fluoro-deoxy-glucose (FDG) uptake in mediastinal, b/l axillary lymph nodes and mild diffuse uptake in enlarged spleen Coronal images showing mild F-18 FDG uptake in enlarged spleen. Transaxial images showing mild F-18 FDG uptake in mediastinal lymph node (hottest lesion with maximum standardized uptake value [SUV<sub>max</sub>-4.3]) and retroperitoneal lymph nodes (SUV<sub>max</sub>-2.3). This image shows a rare case of diffuse large B cell lymphoma (DLBCL) with very low F-18 FDG uptake. Though DLBCL is considered routinely F-18 FDG avid about 3% of the cases with DLBCL can be lowly F-18 FDG avid.<sup>[3]</sup> This image also highlights the need of baseline scan to demonstrate F-18 FDG avidity of the involved lymph nodes for better assessment of response after chemotherapy