PET/CT imaging of gastrointestinal stromal tumor with calcified peritoneal implants after imatinib therapy.
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.
Eslamy
Hedieh K
HK
Department of Radiology, Division of Nuclear Medicine, Stanford University Medical Center, Stanford, California, USA.
Quon
Andrew
A
D000970:Antineoplastic Agents / Q000009:adverse effects; D001549:Benzamides; D002114:Calcinosis / Q000139:chemically induced* / Q000150:complications / Q000000981:diagnostic imaging*; D005260:Female; D019788:Fluorodeoxyglucose F18; D046152:Gastrointestinal Stromal Tumors / Q000150:complications / Q000000981:diagnostic imaging*; D006801:Humans; D000068877:Imatinib Mesylate; D008875:Middle Aged; D010537:Peritoneum / Q000000981:diagnostic imaging*; D010879:Piperazines / Q000009:adverse effects*; D049268:Positron-Emission Tomography; D019736:Prostheses and Implants; D011743:Pyrimidines / Q000009:adverse effects*; D014057:Tomography, X-Ray Computed
D000970:Antineoplastic Agents; D001549:Benzamides; D010879:Piperazines; D011743:Pyrimidines; D019788:Fluorodeoxyglucose F18; D000068877:Imatinib Mesylate