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作 者:张广源[1] 关惠英[1] 黄仕强[1] 李华杰[1] 陈世稳[1]
机构地区:[1]广东省开平市中心医院放射科,广东开平529300
出 处:《实用放射学杂志》2009年第4期498-500,504,共4页Journal of Practical Radiology
摘 要:目的探讨肝局灶性结节增生(FNH)螺旋CT四期动态扫描的典型与非典型CT征象。方法回顾性分析12例经手术病理证实为FNH的病例的典型和不典型CT表现,每例都经CT平扫和四期动态增强扫描。结果12例FNH病例中,10例单发,2例多发,共发现14个病灶。8例单发具有较典型的CT表现:如显示中心疤痕(6例),增强动脉期(25s)明显均匀强化(除外疤痕)(7例),门脉期(50s)仍明显强化,平衡期(90s)稍高密度,延迟期(180s)等或低密度以及增粗与扭曲的供血动脉(6例)等。4个病灶增强动脉期(25s)明显不均匀强化,疤痕区不明显,门脉期和平衡期低密度,术前被误诊为肝细胞肝癌。另外2个病灶误诊为血管瘤。结论FNH大多具有典型的动态CT增强征象,但少数征象不典型。Objective To explore the typical and atypical imaging characteristics of focal nodular hyperplasia(FNH) of liver in four-phase dynamic contrast-enhanced CT scan. Methods 12 cases of FNH confirmed pathologically were collected and its typical and atypical CT findings were analysed retrospectively. All cases underwent plain and four-phase enhanced CT examination. Resuits Of 12 cases,the lesions were multiple in 2 and single in 10,totally 14 lesions were found. 8 cases with single lesions presented the typical CT findings:central scar (6 cases) ,obvious homogeneous enhancement in the arterial (7 cases l and portal phase,homogeneous slightly hyperintensity in the balance phase or isointensity or hypointensity in delayed phase and dilated tortuous artery 16 cases). Four lesions had the same contrast-enhanced modes as hepatocellular carcinoma, and another 2 lesions were misdiagnosed as cavernous hemangiomas. Conclusion The most of FNH have typical contrast-enhanced CT signs,but some of them not.
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