F-18 FDG PET/CT imaging of primary hepatic neuroendocrine tumor

Authors

  • Katsuya Mitamura Department of Radiology, Faculty of Medicine, Kagawa University, Kagawa, Japan
  • Kenichi Tanaka Department of Radiology, Faculty of Medicine, Kagawa University, Kagawa, Japan
  • Makiko Murota Department of Radiology, Faculty of Medicine, Kagawa University, Kagawa, Japan
  • Takayuki Sanomura Department of Radiology, Faculty of Medicine, Kagawa University, Kagawa, Japan
  • Yuka Yamamoto Department of Radiology, Faculty of Medicine, Kagawa University, Kagawa, Japan
Abstract:

Primary hepatic neuroendocrine tumors (PHNETs) are extremely rare neoplasms. Herein, we report a case of a 70-year-old man with a hepatic mass. The non-contrast computed tomography (CT) image showed a low-density mass, and dynamic CT images indicated the enhancement of the mass in the arterial phase and early washout in the late phase. F18- fluorodeoxyglucose (18F-FDG) positron emission tomography (PET) and fused PET/CT images showed increased uptake in the hepatic mass. Whole-body 18F-FDG PET images showed no abnormal activity except for the liver lesion. Presence of an extrahepatic tumor was also ruled out by performing upper gastrointestinal endoscopy, total colonoscopy, and chest and abdominal CT. A posterior segmentectomy was performed, and histologic examination confirmed a neuroendocrine tumor (grade 1). The patient was followed up for about 2 years after the resection, and no extrahepatic lesions were radiologically found. Therefore, the patient was diagnosed with PHNET. To the best of our knowledge, no previous case of PHNET have been detected by 18F-FDG PET imaging.

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Journal title

volume 3  issue 1

pages  58- 60

publication date 2015-01-01

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