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| MRI and pathological analysis of hepatic focal nodular hyperplasia |
| XU Shang-wen1, CHEN Zi-qian1, QIAN Gen-nian1, ZHONG Qun1, CHENG Guan-xun2 |
| 1. Department of Radiology, Fuzhou General Hospital, Fuzhou 350025, China;2. Department of Radiology, Nanfang Hospital, Nanfang Medical University, Guangzhou 510515, China |
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Abstract Objective: To improve diagnostic accuracy of hepatic focal nodular hyperplasia(FNH) by studying MRI multiphase scanning. Methods: A retrospective analysis was made on the unenhanced and dynamic enhanced MR images of 15 patients(totally 16 lesions) with surgical and pathological proved FNH. Results: MR images of 16 lesions always showed appearance with slightly low or isointense on T1-weighted images and isointense or slightly hyperintense on T2-weighted images. All lesions had apparent enhancement in the arterial phase and prolonged enhancement in the portal venous phase and delayed phase. Central scar was found in 5 FNH lesions on unenhanced images and in 11 FNH lesions on dynamic contrast- enhanced images, and demonstrated late enhancement. Conclusion: The unenhanced and dynamic contrast-enhanced MRI scanning can fully show the pathologic and the blood supplying characteristics of FNH and improve differentiating ability from other malignant hypervascular tumors.
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Received: 25 September 2006
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2007, Vol. 18 
