CAJ | 학술논문

目的：探讨复发性及初发性肝癌的超声造影表现及其与肿瘤大小的相关性。方法对395例（共438个肿瘤）初发性肝细胞癌（PHCC）患者和400例（共458个肿瘤）复发性肝细胞癌（RHCC）患者行实时灰阶谐波超声造影检查。将PHCC和RHCC分别分为≤20 mm及＞20 mm组。比较PHCC与RHCC造影增强时相变化在不同大小肿瘤之间的差异。结果在≤20 mm的肿瘤中，动脉期PHCC的等回声比例高于RHCC，门静脉期RHCC的等回声比例高于PHCC。在＞20 mm的肿瘤中，门静脉期及延迟期RHCC等回声肿瘤的比例均高于PHCC。不同大小的肿瘤中，RHCC达等回声的时间早于PHCC，达低回声的时间晚于PHCC。结论不同大小RHCC与PHCC的超声造影表现有一定差异。
목적：탐토복발성급초발성간암적초성조영표현급기여종류대소적상관성。방법대395례（공438개종류）초발성간세포암（PHCC）환자화400례（공458개종류）복발성간세포암（RHCC）환자행실시회계해파초성조영검사。장PHCC화RHCC분별분위≤20 mm급＞20 mm조。비교PHCC여RHCC조영증강시상변화재불동대소종류지간적차이。결과재≤20 mm적종류중，동맥기PHCC적등회성비례고우RHCC，문정맥기RHCC적등회성비례고우PHCC。재＞20 mm적종류중，문정맥기급연지기RHCC등회성종류적비례균고우PHCC。불동대소적종류중，RHCC체등회성적시간조우PHCC，체저회성적시간만우PHCC。결론불동대소RHCC여PHCC적초성조영표현유일정차이。
Objective To compare the contrast-enhanced ultrasonographic (CEUS) features between recurrent hepatocellular carcinomas (RHCCs) and primary hepatocellular carcinomas (PHCCs) with different diameters. Methods CEUS was performed in 400 patients with 458 RHCCs and 395 patients with 438 PHCCs. These lesions were divided into two groups: ≤20 mm and >20 mm, according to the maximum diameter. The enhancement features of CEUS were compared. Ta (time to enhancement), Ti (time to isoecho) and To (time to hypoecho) were analyzed. The echogenicity changes were observed in the arterial, portal venous and delayed phases.Results The rate of isoechoic enhancement was higher in PHCC than that in RHCC in the arterial phase, and was higher in RHCC than that in PHCC in the portal venous phase in the lesions with diameter≤20 mm. The rate of isoechoic enhancement was higher in RHCC than that in PHCC in the portal venous and delayed phases in the lesions with diameter>20 mm. The time to isoecho was earlier and the time to hypoecho was later in RHCC than those in PHCC. Conclusion The performance of CEUS is significantly different between PHCC and RHCC with different diameters.