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Updated: Jun 27, 2026
Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT
Published on: January 22, 2018
PET/CT imaging of gastrointestinal stromal tumor with calcified peritoneal implants after imatinib therapy
1Department of Radiology, Division of Nuclear Medicine, Stanford University Medical Center, Stanford, California, USA.
Abstract:
Calcified tumor mass is an unusual feature of gastrointestinal stromal tumor (GIST) at initial presentation. However, it may develop after imatinib therapy and be erroneously attributed to a second primary malignancy. A 56-year-old woman with a 4.5-year history of metastatic GIST presented to our institution for PET/CT imaging at baseline and at 3 and 15 months after imatinib therapy. Serial PET/CT images demonstrated increasing calcification in peritoneal implants on CT and increasing FDG activity.
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