Type:
Educational Exhibit
Keywords:
Neoplasia, Endocrine disorders, Cancer, Contrast agent-intravenous, Ultrasound, MR, CT, Pancreas, Oncology, Abdomen
Authors:
J. Sanchez Dalmau1, M. Babarro Peleteiro1, P. Gómez Iglesias2, M. L. Rodriguez Rodil2; 1Madrid/ES, 2Móstoles/ES
DOI:
10.26044/ecr2019/C-1212
Conclusion
Pancreatic NETs are rare neoplasms and they can present a diagnostic challenge,
both clinically and radiologically.
The majority are nonsyndromic.
Insulinoma,
gastrinoma,
and glucagonoma are the most common syndromic pNETs.
While most pNETs are sporadic,
they can also be associated with genetic syndromes.
CT is the primary imaging modality and plays an important role in the diagnosis and staging of both syndromic and nonsyndromic pNETs.
Most of them are well-differentiated,
circumscribed,
and hypervascular at CT and MR imaging.
Smaller tumors tend to be more homogeneous than larger tumors,
and heterogeneity from cystic degeneration,
necrosis,
or calcification is more common in larger tumors.
Their detection is important due to their high percentage of malignancy (60-92%).
However,
with the exception of poorly differentiated tumors,
pNETs often have an indolent course.
In our retrospective study,
we realize there are many pancreatic lesions that mimics pNET imaging findings.
Enhancing pancreatic metastases were quite common; all of them due to renal cell carcinoma decades after their diagnosis.