Non-alcoholic fatty liver disease CT: Difference between revisions

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{{Non alcoholic fatty liver disease}}
{{Non alcoholic fatty liver disease}}
'''Editor in Chief''': Elliot Tapper, M.D., Beth Israel Deaconess Medical Center, [[User:C Michael Gibson |C. Michael Gibson, M.S., M.D.]] [mailto:charlesmichaelgibson@gmail.com]
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==Overview==
==Overview==
Imaging is often ordered in the workup of suspected NAFLD.Problematically, ultrasound of fatty liver reveals a hyperechoic echotexture - a so-called 'bright liver' - that can often be indistinguishable from [[fibrosis]] and generally cannot reliably delineate NAFLD from [[NASH]]. CT scan may be helpful in the diagnosis of complications of NAFLD, which include the structure of the liver. But using CT is limited because of the exposure to ionizing radiation. <ref name="urlNonalcoholic Fatty Liver Disease: Diagnosis and Management - American Family Physician">{{cite web |url=http://www.aafp.org/afp/2013/0701/p35.html |title=Nonalcoholic Fatty Liver Disease: Diagnosis and Management - American Family Physician |format= |work= |accessdate=}}</ref>
CT scan may be helpful in the diagnosis of non-alcoholic fatty liver disease. Findings on a CT scan diagnostic for non-alcoholic liver disease include a diffuse, low-density hepatic parenchyma without mass effect.


==CT scan==
==CT scan==
* CT without [[contrast]] is an effective test for elavating liver strucutre and liver fat content.
* Useful for evaluating hepato-biliary system and rule out other causes of liver disease.
* [[Contrast enhanced CT|Contrast enhanced]] CT has a [[sensitivity]] up to 84-87% and [[specificity]] of 75-86%.
* The only limitation of a CT scan is it cannot distinguish between fatty liver disease, steatohepatitis, and steatohepatitis plus fibrosis.
* Findings include:
** A diffuse, low-density hepatic parenchyma
** Focal fatty liver appears as a non-spherical shape without mass effect.


==References==
==References==

Latest revision as of 15:23, 27 December 2017

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Vamsikrishna Gunnam M.B.B.S [2]

Overview

CT scan may be helpful in the diagnosis of non-alcoholic fatty liver disease. Findings on a CT scan diagnostic for non-alcoholic liver disease include a diffuse, low-density hepatic parenchyma without mass effect.

CT scan

  • CT without contrast is an effective test for elavating liver strucutre and liver fat content.
  • Useful for evaluating hepato-biliary system and rule out other causes of liver disease.
  • Contrast enhanced CT has a sensitivity up to 84-87% and specificity of 75-86%.
  • The only limitation of a CT scan is it cannot distinguish between fatty liver disease, steatohepatitis, and steatohepatitis plus fibrosis.
  • Findings include:
    • A diffuse, low-density hepatic parenchyma
    • Focal fatty liver appears as a non-spherical shape without mass effect.

References

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