CT of the liver

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Author: Mikael Häggström [notes 1]

CT of the liver.jpg


Choice of modality

For the liver, the initial imaging of choice is generally as follows:


Focal changes: Scroll through the entire parenchyma, preferably in segments, such as right third, middle third and left third, in order to have greater focus on small details.

Potential findings

  • Hypoattenuating lesions
  • If less than 10 mm in diameter they are generally difficult to characterize adequately.[4] Even in a patient with known malignancy, and with multiple lesions of this size, their presence does not increase the risk of developing liver metastasis, and should practically be regarded as benign.[5]
  • Large simple cysts (>4 cm) may be followed up ensure stability.[6]


  1. For a full list of contributors, see article history. Creators of images are attributed at the image description pages, seen by clicking on the images. See Radlines:Authorship for details.


  1. Procopet, Bogdan; Berzigotti, Annalisa (2017). "Diagnosis of cirrhosis and portal hypertension: imaging, non-invasive markers of fibrosis and liver biopsy ". Gastroenterology Report 5 (2): 79–89. doi:10.1093/gastro/gox012. ISSN 2052-0034. 
  2. Lincke, Therese; Zech, Christoph J. (2017). "Liver metastases: Detection and staging ". European Journal of Radiology 97: 76–82. doi:10.1016/j.ejrad.2017.10.016. ISSN 0720048X. 
  3. Maniam, Santhi (2010). "Magnetic resonance imaging: Review of imaging techniques and overview of liver imaging ". World Journal of Radiology 2 (8): 309. doi:10.4329/wjr.v2.i8.309. ISSN 1949-8470. 
  4. Gopal Ramaraju. How to evaluate an Incidental Focal Liver Lesions (FLLs) or Incidentalomas?. University of Rochester Medical Center, Rochester, NY.
  5. Maarten van Leeuwen, Joost Nederend and Robin Smithuis. Liver - Incidentalomas. What to do with incidentally found lesions in the liver?. Radiology Assistant. Publicationdate May 12, 2007
  6. Blonski WC, Campbell MS, Faust T, Metz DC (2006). "Successful aspiration and ethanol sclerosis of a large, symptomatic, simple liver cyst: case presentation and review of the literature. ". World J Gastroenterol 12 (18): 2949-54. PMID 16718826. PMC: 4087818. Archived from the original. .