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Castán et al. Radiology of hepatocarcinoma in non-cirrhotic patients

A B C

Figure 15: Magnetic resonance imaging in axial planes with T1 sequences in noncontrast phase (A), and arterial contrast phase (B), and
portal phase (C). Multiple lesions (yellow arrows) scattered in right hepatic lobe, hypointense in noncontrast phase (A) and uptake in early
arterial phase (B), held in portal phase (C) corresponding to liver metastases of pancreatic neuroendocrine tumor
(25%), or predominantly cystic (15%). It shows and laboratory data suggesting a history of cirrhosis,
peripheral enhancement in the arterial phase. In MRI it biopsy should be performed in all lesions with
is hypointense on T1 and hyperintense on T2 and with pathognomonic characteristics of HCC.
an enhancement after administration of gadolinium
similar to that obtained in CT. Financial support and sponsorship
None.
In addition to the metastatic neuroendocrine tumors,
other tumors with hypervascular appearance such Conflicts of interest
as thyroid tumors, renal tumors or melanomas, There are no conflicts of interest.
may present as an initial liver finding. Such
lesions are generally multiple and small, unlike the Patient consent
usual presentation of HCC. The uptake curve of
hypervascular metastases is typical: very intense and There is no patient involved.
early enhancement in the arterial phase and also very
early wash-out in the portal and equilibrium phases. Ethics approval
This dynamic behavior is similar to that presented in This review paper is waived for ethics approval.
HCC and therefore, if a primary tumor is not known
and there is a small number of lesions, biopsy is REFERENCES
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