18F-FDG PET/MR Imaging for Differentiation of Serous From Non-Serous Pancreatic Cystic Neoplasms: A Pilot Study

University Health Network, Toronto

Status: Completed

Conditions: Pancreatic Cystic Neoplasms

Treatments: Diagnostic Test: PET scan

Study type: Interventional

Funder types: Other

Identifiers

NCT03352037

UHN-16-6058

Details and patient eligibility

About

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.

Enrollment: 11 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

-Patients with known pancreatic cystic lesions, including suspected pancreatic serous cystic neoplasms and non-serous cystic neoplasms

Exclusion criteria

• General Contraindications to MRI such as pacemaker, brain aneurysm clip etc. -
• Pregnancy
• Age below 18 years
• Estimated GFR (eGFR < 30 mL/min)
• MRI contrast allergy;

Trial design

Primary purpose: Diagnostic

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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11 participants in 1 patient group

Single Arm

Other group

Description:

In this project, there is only one study group which comprises of patients with pancreatic cystic neoplasms who will undergo pancreatic PET/MRI.

Treatment:

Diagnostic Test: PET scan