| 赵心明,李槐,徐锋,欧阳汉,周纯武.肝脏局灶性结节增生的影像表现[J].中国医学影像技术,2004,20(10):1519~1522 |
| 肝脏局灶性结节增生的影像表现 |
| Imaging manifestation of focal nodular hyperplasia of the liver |
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| DOI： |
| 中文关键词: 肝肿瘤 影像诊断 |
| 英文关键词:Liver neoplasms Imaging diagnosis |
| 基金项目: |
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| 摘要点击次数: 1984 |
| 全文下载次数: 1306 |
| 中文摘要: |
| 目的 探讨肝脏局灶性结节增生的影像学表现和诊断价值。方法 回顾性分析经病理证实的肝脏局灶性结节增生20例(25个病灶)的影像资料。结果 4/4个病灶CT平扫呈等或略低密度影;92%(22/24)病灶在CT增强扫描动脉期为均匀高密度或明显高密度;96%(23/24)病灶在门静脉期表现为高密度或略高密度;38%(8/21)病灶在延迟后平衡期扫描表现为高密度或略高密度,52%(11/21)为等密度;50%(12/24)病灶内有纤维分隔或瘢痕。60%(9/15)病灶在MR的T1WI为等信号,40%(6/15)为略低信号或低信号; 27%(4/15)病灶在T2WI为等信号,73%(11/15)为略高信号或高信号;15/15个病灶在动态增强扫描表现为动脉期明显均匀强化,门静脉期中等强化;11个病灶在延迟扫描呈高信号或略高信号;67% (10/15)病灶内可见纤维分隔或瘢痕。B超检查,65%(15/23)个病灶呈低回声,5个呈等回声或稍强回声病灶,3个呈高回声。结论 影像检查能够正确诊断大部分肝脏局灶性结节增生病例,MRI显示其病理特征优于CT和B超。 |
| 英文摘要: |
| Objective To study imaging features and diagnostic value of focal nodular hyperplasia (FNH) of the liver. Methods Imaging findings of 20 patients with 25 foci histopathologically proved FNH lesions were retrospectively analyzed. Of 20 cases, CT scanning was performed in 19 (24 lesions), MRI in 12 (15 lesions), and ultrasonography in 20 (23 Lesions). Results The mean size of these 25 FNHs was 3cm (1-6 cm). All 4 lesions showed iso-density or slight hypodensity on plain CT. FNH lesions showed hyperdensity or marked hyperdensity on arterial phase in 22/24 (92%), hyperdensity or slight hyperdensity on portal venous phase in 23/24 (96%), and hyperdensity or slight hyperdensity in 8/21 (38%) and iso-density in 11/21 (52%) on delayed phase on CT. Lesions showed iso-intensity in 9/15 (60%) and hypointensity or slight hypointensity in 6/15 (40%) on T1WI, and iso-intensity in 4/15 (27%) and hyperintensity or slight hyperintensity in 11/15 (73%) on T2WI on MRI. Lesions showed marked homogeneous enhancement on dynamic arterial phase and moderate enhancement on portal venous phase. Eleven lesions showed hyperintensity or slight hyperintensity on delayed phase. A central scar or septa was visible in 12/24 (50%) lesions on CT, and 10/15 (67%) lesions on MRI. Lesions showed hypoecho in 15/23 (65%), iso-echo or slight hyperecho in 5 and hyperecho in 3 on ultrasonography. Conclusion Correct imaging diagnosis is possible in most cases of FNH. MRI is better than CT and ultrasonography in revealing the pathologic features of FNH. |
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