Rhabdomyosarcomatous Transformation of a Gastrointestinal Stromal Tumor following Treatment with Imatinib
CT scans from three time points showing a gastric mass. (a) Initial presentation. (b) Following 5 months of imatinib therapy. Note tumor response as compared to (a). (c) Following 10 months of imatinib therapy. Note tumor progression (tumor circled).
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