Enhancement Pattern of Small Hepatic Hemangioma: Findings on Multiphase Spiral CT and Dynamic MRI.
10.3348/jkrs.1999.40.2.293
- Author:
Byung In CHOI
1
;
Seung Koo LEE
;
Myeong Jin KIM
;
Jae Joon CHUNG
;
Hyung Sik YOO
;
Jong Tae LEE
Author Information
1. Department of Diagnostic Radiology, College of Medicine, Yonsei University, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
Liver neoplasms, MR;
Computed tomography(CT), helical
- MeSH:
Diagnosis;
Hemangioma*;
Humans;
Liver;
Magnetic Resonance Imaging*;
Tomography, Spiral Computed*;
Tomography, X-Ray Computed
- From:Journal of the Korean Radiological Society
1999;40(2):293-297
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To compare the enhancement characteristics of small hemangiomas seen on multiphase spiral CT anddynamic MR imaging MATERIALS AND METHODS: Thirteen patients with 20 hepatic hemangiomas less than 25mm indiameter underwent both multiphase spiral CT and dynamic MR imaging. All lesions were assigned to one of threeclassified into 3 categories according to the enhancement pattern seen on multiphase spiral CT : typical delayedpooling, atypical early enhancement, or continuous low attenuation. The enhancement patterns seen on spiral CT andon dynamic MRI were correlated. RESULTS: On CT scans, ten lesions (50%) showed delayed pooling. Six(30%) showedearly arterial enhancement and four(20%) showed continuous low attenuation. On delayed-phase MRI, all lesionsshowed delayed high signal intensity compared to adjacent liver parenchyma. Four of six lesions with earlyenhancement on CT showed peripheral globular enhancement on early arterial-phase MRI. CONCLUSION: On multiphasespiral CT scans, small hemangiomas can show variable atypical enhancement features. In this situation,contrast-enhanced dynamic MRI is helpful for the diagnosis of hemangiomas.
