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  Indian J Med Microbiol
 

Figure 11: Maximum intensity projection image (a) of a patient with anaplastic large cell lymphoma shows intensely fluoro-deoxy-glucose (FDG) avid disease in the mediastinum in staging positron emission tomography/computed tomography (PET/CT). PET/CT done after eight cycles of chemotherapy show (b) mildly FDG avid disease in mediastinum. Transaxial images of pre and post therapy scans (c and d respectively) show mild FDG uptake in the mass that is above mediastinal blood pool activity. Also the sum product diameter of the mass has decreased by more than 50%. According to International Harmonization Project criteria decrease of 50% or more of lymph nodes involved along with persistent FDG uptake above mediastinal blood pool is classified as a partial response. Accordingly the patient was classified as partial responder and patient presented with progressive disease 4 months after the post therapy scan and was put on salvage chemotherapy

Figure 11: Maximum intensity projection image (a) of a patient with anaplastic large cell lymphoma shows intensely fluoro-deoxy-glucose (FDG) avid disease in the mediastinum in staging positron emission tomography/computed tomography (PET/CT). PET/CT done after eight cycles of chemotherapy show (b) mildly FDG avid disease in mediastinum. Transaxial images of pre and post therapy scans (c and d respectively) show mild FDG uptake in the mass that is above mediastinal blood pool activity. Also the sum product diameter of the mass has decreased by more than 50%. According to International Harmonization Project criteria decrease of 50% or more of lymph nodes involved along with persistent FDG uptake above mediastinal blood pool is classified as a partial response. Accordingly the patient was classified as partial responder and patient presented with progressive disease 4 months after the post therapy scan and was put on salvage chemotherapy