Cholangiocarcinoma MRI: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
Line 4: | Line 4: | ||
==Overview== | ==Overview== | ||
==MRI== | ==MRI== | ||
*MRI of cholangiocarcinoma may be used to: | |||
:*Determine the extent and stage of extrahepatic bile duct cancer. | |||
:*Observe if the cancer has spread to nearby organs or structures. | |||
*On MRI, intrahepatic cholangiocarcinoma is either isointense or hypointense relative to the normal liver on T1w MR images but may range from mildly to markedly hyperintense on T2w images. | |||
*The signal intensity of the tumor is variable and depends on the amount of mucinous material, fibrous tissue, hemorrhage, and necrosis within the lesion. | |||
*On dynamic study after injection of Gd-BOPTA or Gd-EOB-DTPA, minimal or moderate incomplete enhancement is seen at the periphery on early images, whereas progressive central contrast enhancement is seen on later images. | |||
*Generally, on delayed phase images lesions show peripheral hypointensity and central iso- or hyperintensity due to central pooling of contrast medium within central desmoplastic reaction. | |||
*Satellite nodules are seen in about 10-20% of intrahepatic cholangiocarcinoma cases and are chiefly responsible for the poor prognosis of this tumor. | |||
==References== | ==References== | ||
{{reflist|2}} | {{reflist|2}} |
Revision as of 17:20, 5 November 2015
Cholangiocarcinoma Microchapters |
Diagnosis |
---|
Treatment |
Case Studies |
Cholangiocarcinoma MRI On the Web |
American Roentgen Ray Society Images of Cholangiocarcinoma MRI |
Risk calculators and risk factors for Cholangiocarcinoma MRI |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Suveenkrishna Pothuru, M.B,B.S. [2]
Overview
MRI
- MRI of cholangiocarcinoma may be used to:
- Determine the extent and stage of extrahepatic bile duct cancer.
- Observe if the cancer has spread to nearby organs or structures.
- On MRI, intrahepatic cholangiocarcinoma is either isointense or hypointense relative to the normal liver on T1w MR images but may range from mildly to markedly hyperintense on T2w images.
- The signal intensity of the tumor is variable and depends on the amount of mucinous material, fibrous tissue, hemorrhage, and necrosis within the lesion.
- On dynamic study after injection of Gd-BOPTA or Gd-EOB-DTPA, minimal or moderate incomplete enhancement is seen at the periphery on early images, whereas progressive central contrast enhancement is seen on later images.
- Generally, on delayed phase images lesions show peripheral hypointensity and central iso- or hyperintensity due to central pooling of contrast medium within central desmoplastic reaction.
- Satellite nodules are seen in about 10-20% of intrahepatic cholangiocarcinoma cases and are chiefly responsible for the poor prognosis of this tumor.