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MIBG Uptake in Pancreas as a Normal Variant
1From the Department of Nuclear Medicine, Beijing Friendship Hospital of Capital Medical University, Beijing, China.
Clinical Nuclear Medicine
|June 29, 2021
Summary
Delayed iodine-123 meta-iodobenzylguanidine (123I-MIBG) scans can help differentiate true neuroblastoma recurrence from benign findings in the pancreas. This imaging technique aids in accurate disease restaging for pediatric patients.
Area of Science:
- Nuclear medicine
- Pediatric oncology
- Diagnostic imaging
Background:
- Neuroblastoma is a common pediatric cancer requiring accurate restaging.
- 123I-MIBG scintigraphy is a standard imaging modality for neuroblastoma.
- Interpreting incidental findings on MIBG scans can be challenging.
Observation:
- A 5-year-old girl with high-risk neuroblastoma showed faint 123I-MIBG uptake in the pancreatic head on initial SPECT/CT.
- This uptake was transient and disappeared on a delayed 6-hour scan.
- Follow-up scans at 6 months showed no recurrence in the pancreatic head.
Findings:
- The transient MIBG uptake in the pancreatic head was likely a benign finding, not indicative of neuroblastoma.
- Delayed imaging is crucial for characterizing indeterminate MIBG uptake.
- This case highlights the importance of dynamic imaging protocols.
Implications:
- Delayed 123I-MIBG imaging can improve diagnostic accuracy in neuroblastoma restaging.
- It helps avoid unnecessary interventions based on false-positive findings.
- This approach enhances the management of pediatric cancer patients.
