European Radiology:肝功能成像评分在预测HCC切除术后肝功能衰竭方面的价值

2022-08-01 shaosai MedSci原创

肝脏功能成像评分(FLIS)是一项涵盖了肝脏钆塞酸二钠增强MRI三个特征的系统性评分,包括增强质量、胆汁对比剂排泄率和门静脉信号强度的持续性。

肝癌是全球范围内最常见的癌症之一,是癌症相关死亡的第三大原因。肝细胞癌(HCC)占原发性肝癌的70-90%。对于符合条件的HCC患者来说,部分肝切除术仍然是最有效的治疗方法,但部分患者会出现肝功能不足甚至肝衰竭(PHLF)。PHLF是导致HCC患者住院时间延长、费用增加和长期疗效不佳的主要原因。因此,术前准确的预测PHLF有助于风险患者识别并改善其围手术期的管理

塞酸二钠作为一种肝特异性对比剂具有功能性肝细胞摄取并通过膜运输工具排泄到胆管。有研究证明塞酸二钠增强MRI有助于预测部分肝切除术后PHLF的发生率。然而,之前报道的这些应用需要复杂的计算,其成功取决于系统的类型和MRI中使用的场强和序列。肝脏功能成像评分(FLIS)是一项涵盖了肝脏塞酸二钠增强MRI三个特征系统性评分包括增强质量、胆汁对比剂排泄率和门静脉信号强度的持续性。这些研究表明,FLIS与接受肝移植的患者的移植存活率有关,也与晚期慢性肝病患者的发生首次肝功能失调和死亡率有关。同时计算FLIS不需要测量信号强度,也不需要使用特定的软件进行复杂的计算,且与场强和成像系统无关。因此,在常规的临床实践中FLIS更佳容易操作和实现。

近日,发表在European Radiology杂志的一项研究探讨了FLIS预测HCC患者PHLF的能力,为临床快速准确的评估及识别高风险患者并进行个性化方案的制定提供了参考依据。

本项研究纳入了502名接受术前钆塞酸二钠增强MRI的接受HCC切除的患者。使用逻辑回归分析确定了PHLF的术前预测因素。使用受试者工作特性曲线评估FLIS预测PHLF的能力,并将其预测能力与终末期肝病模型(MELD)评分、白蛋白-胆红素(ALBI)评分和吲哚菁绿15分钟保留率(ICG-R15)进行比较。 

在多变量分析中,PHLF与FLIS(OR 0.452,95% CI 0.361至0.568,p < 0.001)和主要切除术(OR 1.898,95% CI 1.057至3.408,p = 0.032)独立相关。与MELD评分(0.557)、ALBI评分(0.609)或ICG-R15(0.605)相比,FLIS与较高的受试者工作特性曲线下面积(0.752)有关(所有P < 0.05)。FLIS≤4的患者接受较大范围切除手术,比FLIS较低的患者接受较小范围切除手术发生PHL的风险高9.4倍。 

 
 两位肝细胞癌(HCC)患者的肝胆图像。A, B 一名43岁的男性,患有直径4.5厘米的HCC(*),肝脏功能成像评分(FLIS)为6分。肝实质的信号强度高于右肾(三角形,2分),门静脉(箭头)相对于肝实质表现出低信号(2分),可见胆汁对比剂排泄到胆管(箭头,2分)。该患者在切除HCC后没有出现肝切除后肝衰竭(PHLF)。C, D 一位58岁的男性,患有直径6.7厘米的HCC(*),FLIS为4。肝脏信号强度与肾脏相似(三角形,得分1),门静脉(箭头)与肝实质等信号(得分1),可见造影剂排泄到胆管(箭头,得分2)。该患者在HCC切除术后出现了PHLF

本研究表明,低FLIS可独立预测接受HCC切除术的患者的PHLF。如果手术范围较大,这种风险会大大增加。FLIS可以实现对适合切除的HCC患者进行术前的常规筛选,将有助于改善患者的围手术期管理并提高患者预后。

原文出处:

Ningbin Luo,Xiangyang Huang,Yinan Ji,et al.A functional liver imaging score for preoperative prediction of liver failure after hepatocellular carcinoma resection.DOI:10.1007/s00330-022-08656-z

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