Multimodal imaging in functional endocrine pancreatic tumors

Area of Science:

• Oncology
• Radiology
• Endocrinology

Background:

• Endocrine pancreatic tumors, or pancreatic islet tumors, are rare neuroendocrine neoplasms.
• About 50% secrete hormones causing distinct clinical syndromes.
• Accurate localization is crucial after clinical and lab diagnosis.

Purpose of the Study:

• To review and highlight the diagnostic value of various imaging modalities for endocrine pancreatic tumors.
• To emphasize the importance of combining imaging techniques for optimal visualization.

Main Methods:

• Anatomical imaging: ultrasound, CT, MRI.
• Functional radiological studies: arterial calcium stimulation with hepatic venous sampling.
• Functional nuclear medicine imaging: scintigraphy, PET, PET/CT, SPECT/CT.

Main Results:

• High-resolution anatomical and functional imaging combinations (PET/CT, SPECT/CT) provide excellent diagnostic evaluation.
• No single imaging method is universally superior.
• Effective visualization often necessitates combining multiple imaging modalities.

Conclusions:

• A multimodal imaging approach is essential for the accurate diagnosis and localization of endocrine pancreatic tumors.
• Integrated imaging strategies improve the diagnostic yield for these rare tumors.