The overlap of morphological imaging features results in many incidentally detected pancreatic cystic neoplasms going undiagnosed, including benign serous cystic neoplasms (SCN) and potentially malignant mucinous lesions (nonserous). The diagnostic ambiguity then lead to invasive procedures such as endoscopic ultrasonography (EUS), unwarranted surgical resection on SCN lesions or the need for long term periodic surveillance with delayed diagnosis of potentially malignant nonserous lesions. Therefore, precise differentiation of SCN from nonserous cystic neoplasms is highly desirable. The 18F-fluorodeoxyglucose (FDG) accumulation in tumor cells, which is induced by high expression of glucose transporter proteins (mainly include GLUT-1 and -3), can be used to discriminate malignant and benign pancreatic cystic tumors in positron emission tomography (PET) imaging. GLUT-1 expression has also been documented in benign SCN while no such evidence exists in potentially malignant nonserous cystic neoplasms. Based on this evidence, investigators will conduct a pilot study to evaluate if integrated 18F-FDG PET/MR imaging with simultaneous MR and PET acquisition is helpful in differentiation of SCN from nonserous lesions.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
11
Patients with known pancreatic cystic lesions requiring MR imaging for lesion characterization for clinical evaluation will be recruited to undergo 18F-FDG PET/MR imaging after written informed consent.
University Health Network
Toronto, Ontario, Canada
Investigation of 18F-FDG PET/MRI efficacy in differentiating pancreatic cystic neoplasms
Time frame: 18 months
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