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Related Experiment Videos

False-positive CT portography: correlation with pathologic findings

P Soyer1, D Lacheheb, M Levesque

  • 1Department of Radiology, Hôpital Louis Mourier, Colombes, France.

AJR. American Journal of Roentgenology
|February 1, 1993
PubMed
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False-positive diagnoses from CT portography can lead to missed surgical opportunities for liver tumors. Pathologic correlation reveals entities like fatty infiltration and cirrhosis mimic tumors, posing diagnostic challenges.

Area of Science:

  • Radiology and Imaging
  • Hepatobiliary Surgery
  • Pathology

Background:

  • Superior mesenteric arterial portography (CT portography) is used in liver imaging.
  • False-positive findings on CT portography can complicate preoperative evaluation.
  • Accurate diagnosis is critical for surgical planning in potential hepatic tumors.

Purpose of the Study:

  • To identify causes of false-positive diagnoses from CT portography.
  • To correlate imaging characteristics of false-positive lesions with pathologic findings.
  • To improve diagnostic accuracy in preoperative liver tumor assessment.

Main Methods:

  • Retrospective analysis of 52 patients undergoing CT portography prior to liver surgery.
  • Correlation of 10 false-positive CT portography findings with histologic data from resections or biopsies.

Related Experiment Videos

  • Analysis of imaging features of incorrectly diagnosed lesions.

    • Main Results:

    • A false-positive diagnosis rate of 15% was observed.
    • Seven false-positive findings were interpreted as hepatic tumors.
    • Pathologic diagnoses included focal fatty infiltration (3), cirrhosis (2), and portal perfusion defects (3).

    Conclusions:

    • False-positive findings on CT portography can mimic hepatic tumors, potentially leading to unnecessary surgical contraindications.
    • Entities such as focal fatty infiltration, cirrhosis, and portal perfusion defects can cause false-positive diagnoses.
    • Differentiating these entities from true tumors based on CT portography remains a diagnostic challenge.