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Radiological findings in primary liver malignancies
M Päivänsalo1, T Tikkakoski, T Typpö
1Department of Diagnostic Radiology, University Central Hospital, Oulu, Finland.
Rofo : Fortschritte Auf Dem Gebiete Der Rontgenstrahlen Und Der Nuklearmedizin
|February 1, 1991
Summary
This study compared imaging techniques for primary liver cancer. Computed tomography (CT) and ultrasound (US) showed high accuracy in detecting tumors, with CT being superior for larger tumors.
Area of Science:
- Radiology
- Oncology
- Diagnostic Imaging
Background:
- Primary liver malignancy presents diagnostic challenges.
- Accurate tumor detection and characterization are crucial for patient management.
- Evaluating the performance of various imaging modalities is essential.
Purpose of the Study:
- To retrospectively evaluate the sensitivity and appearances of primary liver tumors using multiple imaging techniques.
- To compare the diagnostic accuracy of ultrasound (US), computed tomography (CT), arteriography, and isotope examination.
- To assess the false-negative rates and detection capabilities for different tumor sizes.
Main Methods:
- Retrospective analysis of imaging findings in 134 patients with primary liver malignancy.
- Data collection from ultrasound, computed tomography, arteriography, isotope examination, and fine-needle biopsies.
- Surgical and autopsy findings were used for correlation.
Main Results:
- Computed tomography (CT) demonstrated the highest correct classification rate (88%) for tumor distribution (solitary/multiple/diffuse).
- Ultrasound (US) and CT showed high sensitivity in detecting lesions interpreted as tumors (94% and 91%, respectively).
- CT had the lowest false-negative rate (0%) for tumors 8 cm or larger, while US missed only 4%.
Conclusions:
- Ultrasound and computed tomography are highly sensitive for detecting primary liver malignancy.
- CT offers superior performance in identifying larger tumors, with no missed cases in this study.
- Imaging modality choice should consider tumor size and desired classification accuracy.