Hepatic Hemangioma with Atypical Sonographic Features: Value of Two-Phase Spiral CT
Journal of the Korean Radiological Society
;
: 279-284, 1997.
Article
in Korean
| WPRIM
| ID: wpr-76653
ABSTRACT
PURPOSE:
The purpose of this study was to evaluate enhancement patterns, as seen on two-phase spiral CT, of hepatic hemangiomas in which atypical features had been seen on sonography (US) MATERIALS ANDMETHODS:
Two-phase spiral CT scanning was performed in 18 patients in whom 24 atypical hemangiomas had been seen on US. Two-phase images were obtained at 25-45 seconds (arterial dominant phase) and 2-5 minutes (equilibrium phase) after the initiation of a bolus injection of contrast material (150 ml, 5 ml/sec). Enhancement patterns of hemangiomas during each phase were classified as homogeneous high, peripheral high, or low attenuation, and were retrospectively analyzed.RESULTS:
In the arterial dominant phase of spiral CT, low attenuation was seen in nine hemangiomas (38%), globular or spotty peripheral high attenuation in 14 (58%), and homogeneous high attenuation in one (4%). In the equilibrium phase, enhancement patterns were peripheral high attenuation (partial fill-in) in 18 lesions (75%), and homogeneous high attenuation (complete fill-in) in three (12.5%), In the other three (12.5%) enhancement showed no significant change; in one of these, density was slightly less than in the arterial phase, and two showed subtle peripheral high attenuation. Fourteen hemangiomas (58%) showed globular or spotty peripheral high attenuation in the arterial dominant phase and peripheral or homogeneous high attenuation with progressive centripetal enhancement in the equilibrium phase.CONCLUSION:
Our results suggest that two-phase spiral CT during the arterial dominant and equilibrium phase is useful in differentiating hepatic hemangiomas with atypical features seen on US from malignant hepatic tumors.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Retrospective Studies
/
Ultrasonography
/
Tomography, Spiral Computed
/
Hemangioma
Type of study:
Diagnostic study
/
Observational study
Limits:
Humans
Language:
Korean
Journal:
Journal of the Korean Radiological Society
Year:
1997
Type:
Article
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