Hypervascular pancreatic lesions

Last revised by Yahya Baba on 5 Dec 2021

Citation, DOI, disclosures and article data

Citation:

Baba Y, Luong D, Hypervascular pancreatic lesions. Reference article, Radiopaedia.org (Accessed on 24 Apr 2024) https://doi.org/10.53347/rID-87040

DOI:

https://doi.org/10.53347/rID-87040

Permalink:

https://radiopaedia.org/articles/87040

rID:

87040

Article created:

18 Feb 2021, Yahya Baba ◉

Disclosures:

At the time the article was created Yahya Baba had no recorded disclosures.

View Yahya Baba's current disclosures

Last revised:

5 Dec 2021, Yahya Baba ◉

Disclosures:

At the time the article was last revised Yahya Baba had no recorded disclosures.

View Yahya Baba's current disclosures

Revisions:

9 times, by 2 contributors - see full revision history and disclosures

Systems:

Gastrointestinal

Sections:

Gamuts

Synonyms:

Hypervascular lesions of the pancreas
Enhancing pancreatic lesions
Enhancing pancreatic mass
Enhancing lesions in the pancreas

Hypervascular pancreatic lesions are findings that enhance more or similarly to the background pancreatic parenchyma in the late arterial phase, on contrast-enhanced CT or MRI.

Anatomical variants

intrapancreatic accessory spleen: should not be overdiagnosed as a malignant tumor

Vascular anomalies

arterial aneurysm ¹
- involves the pancreaticoduodenal and /or gastroduodenal arteries
- well-circumscribed
- communicates with the adjacent vessel
- enhancement pattern identical to the aorta
- peripheral atherosclerotic calcifications may be seen
peripancreatic arterial pseudoaneurysm ¹
- should be considered after pancreatitis or trauma
- usually surrounded by inflammation or extravasation of contrast material
- involves the splenic artery (40%), gastroduodenal artery (30%), and pancreaticoduodenal artery (10 %)
venous aneurysm ¹
- rare
- enhancement pattern identical to adjacent venous structures
- luminal communication with adjacent veins
- usually seen in the setting of cirrhosis and/or portal hypertension
- involves the splenic and portal veins

Neoplastic

low risk of malignancy
- solid pseudopapillary tumors
- solid serous cystadenomas of the pancreas ⁴
high risk of malignancy
- pancreatic acinar cell carcinoma (ACC)
- hypervascular pancreatic metastases
- neuroendocrine tumors
  - non-functional neuroendocrine tumors
  - functional neuroendocrine tumors

References

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