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Abstract
{uF076}Diagnostic CT and PET/CT may be performed for initial staging of patients with GIST . {uF076}Tumor response to imatinib is better assessed with a combination of morphologic and functional imaging, hence PET/CT can provide additional information in individual cases when compared with diagnostic CT.{uF076}It is preferred to perform a PET/CT before starting target therapy in metastatic patients as a baseline study and after 2-3 months to assess early therapy response .{uF076}Patient`s prognosis in GIST is significantly correlated to the presence of lymph node metastases and number of organs involved with metastases