Hepatocellular carcinoma MRI: Difference between revisions

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Revision as of 19:49, 4 September 2015

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Mohamad Alkateb, MBBCh [2]

MRI may be helpful in the diagnosis of hepatocellular carcinoma.

Common findings of hepatocellular carcinoma on MRI:

On T1-weighted MR images, HCC is most often hypointense relative to the liver, although hyperintense lesions or areas of hyperintensity within hypointense lesions may be seen.
- These hyperintense regions within the HCC reflect the presence of fat, copper, protein, or blood secondary to intralesional hemorrhage.

On T2-weighted images, HCC is generally hyperintense, although well-differentiated lesions that are isointense relative to the liver parenchyma may be seen.
Most HCCs show intense enhancement on arterial phase contrast-enhanced images.
A large HCC (>5 cm) may have a number of characteristic features, such as a mosaic pattern, a tumor capsule, extracapsular extension with formation of satellite nodules, vascular invasion, and extrahepatic dissemination, including lymph node and distant metastases.
- The mosaic pattern is created by confluent small nodules separated by thin septa and necrotic areas within the tumor. This pattern is more often depicted on T2-weighted MR images than on T1-weighted images

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 {{Hepatocellular carcinoma}}
-{{CMG}}
+{{CMG}} {{AE}} {{MJK}}
 ==Overview==
-==MRI==
+MRI may be helpful in the diagnosis of hepatocellular carcinoma.
-*'''Magnetic resonance imaging (MRI):''' An MRI uses magnetic fields, which is a different imaging type from computed tomography (CT) to produce detailed images of the body. MRI scans are very helpful when diagnosing hepatocellular carcinoma. Sometimes they can be used to distinguish a benign tumor from a cancerous one. Like computed tomography (CT), a contrast agent may be injected into a patient’s vein to create a better picture. MRI scans take a longer time than a CT scan to complete.
+==Key Findings in MRI in Hepatocellular Carcinoma==
+Common findings of hepatocellular carcinoma on MRI:
 * On T1-weighted MR images, HCC is most often hypointense relative to the liver, although hyperintense lesions or areas of hyperintensity within hypointense lesions may be seen.
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+[[Category:Gastroenterology]]
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