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case_images: (A) Pre-treatment PET-CT. (B) Post-cycle 1 CT abdomen showing splenomegaly.
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case_images: Five years later, surveillance positron emission tomography-computed tomography (PET-CT) revealed hypermetabolic anterior mediastinal soft tissue masses involving the left side of the sternum and left pectoral muscle as well as multiple hypermetabolic lymph nodes (Deauville score of 5); no disease was noted elsewhere (Figure 1A). Computed tomography (CT) scan of the abdomen and pelvis was notable for splenomegaly measuring 16 cm that was not present on pre-treatment PET-CT scan (Figure 1B).
case_images: Timeline of the case.
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case_images: Figure 2 illustrates the case timeline.