Nonfunctioning endocrine pancreatic tumor examined with 18F-FDG PET/CT
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A 71-year-old woman with type 2 diabetes mellitus complained of generalized fatigue. A 36-mm tumor in the pancreatic tail was detected with ultrasonography. The tumor was found to have marked hypervascularity with contrast-enhanced computed tomography (CT) and magnetic resonance. Combined 18F-fluorodeoxyglucose positron emission tomography and CT (18F-FDG PET/CT) showed 18F-FDG by the tumor with a maximal standardized uptake value of 2.98 at 50 min and 3.29 at 100 min following injection of 18F-FDG. 18F-FDG PET/CT suggested no extrapancreatic spread of the tumor. The patient had no pancreatic hormone-associated symptoms. Distal pancreatectomy was performed, and a well-differentiated endocrine tumor was diagnosed. The resected specimen showed neither infiltration of adjacent structures nor metastasis to regional lymph nodes. The present case suggests that 18F-FDG PET/CT is a reliable modality for staging endocrine pancreatic tumors.
Keywords18F-FDG PET/CT Pancreas Nonfunctioning endocrine tumor