Yoshioka M, Uchinami H, Watanabe G, Sato T, Shibata S, Kume M, Ishiyama K, Takahashi S, Hashimoto M, Yamamoto Y. F-18 fluorodeoxyglucose positron emission tomography for differential diagnosis of pancreatic tumors.
Springerplus 2015;
4:154. [PMID:
25883884 PMCID:
PMC4392042 DOI:
10.1186/s40064-015-0938-2]
[Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 03/20/2015] [Indexed: 01/15/2023]
Abstract
Positron emission tomography with 2-deoxy-2-[18F]fluoro-D-glucose (FDG-PET) has been proven useful for differentiating pancreatic ductal cancer from mass-forming chronic pancreatitis. However, there are particular pancreatic tumors having various grades of malignancy such as intraductal papillary mucinous neoplasm (IPMN) or pancreatic neuroendocrine tumor. We examined whether the cut-off value of maximum standardized uptake value (SUVmax) determined by pancreatic ductal cancers is also applicable for other pancreatic tumors.
One hundred thirty six patients with pancreatic tumors underwent FDG-PET imaging. We first analyzed the cut-off value to differentiate pancreatic ductal cancers from mass-forming chronic pancreatitis. Secondly, we determined the cut-off value between malignant IPMN and benign IPMN. Thirdly, we computed a cut-off value between malignant pancreatic tumors and benign tumors irrespective of tumor type.
The optimal cut-off value to differentiate ductal cancers from mass-forming chronic pancreatitis was 2.5. The optimal cut-off value for differentiating malignant IPMN from benign IPMN was also 2.5, similar to that of reported studies. In all types of pancreatic tumors, the cut-off value was also 2.5. The accuracy for detecting malignancy was 93.4% for all tumors.
In the FDG-PET study for pancreatic tumors, an SUVmax of 2.5 would be justified as a cut-off value to differentiate malignant lesions.
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