编者按:第53届欧洲肝脏研究学会(EASL)年会开设了两场“State-of-the-art Lectures”,分别聚焦临床和基础前沿话题。西班牙巴塞罗那大学Jaime Bosch教授就是否应该放弃“肝硬化”诊断这一临床问题在会上给出了答案。Bosch教授是临床肝病学专家,也是全球公认的肝脏疾病门静脉高压症和血流动力学评估专家,在这一领域,他在同行评审的期刊中撰写/共同发表了四百余篇论文。《国际肝病》记者有幸采访到Bosch教授,相关内容整理如下。
肝硬化是几种晚期慢性肝病的共同终末期解剖学诊断。多年来,“肝硬化”一直是一个令人担忧的诊断。但现在看来这个诊断也许并不合适。除了负面的含义之外,该术语首先是一个特定的解剖学诊断,需要进行侵入性肝活检以确认,并是一个可以与疾病多个阶段相吻合的解剖学发现。
此外,肝硬化患者的预后在代偿期和失代偿期差异明显,活检不会明确此类患者的肝功能是否存在失代偿,所以对患者预后判断意义较小。在评估疾病方面也因其不能经常重复而不实用。
因此,是时候放弃“肝硬化”这个术语了。最好的做法是将疾病作为一个连续统一体来看待,根据每个阶段的预后和患者疾病特点来对各个阶段进行区别,建议采用晚期慢性肝病(advanced chronic liver disease,ACLD)进行临床分期,制定相应的治疗目标,更好地实施个体化治疗,改善患者预后。
ACLD的发展经历了几个阶段。第一阶段是代偿性ACLD,可持续多年,多数患者无太多不适,甚至通常完全无症状。当患者处在该阶段时,最重要的是预防代偿失调,这是疾病变得更严重并且死亡率升高的阶段。
因此,要首先评估代偿患者是否合并门静脉高压症,这决定了失代偿的风险程度。无门静脉高压患者并不需要过多治疗。如患者已合并门静脉高压症,则需要仔细随访治疗,因为患者出现失代偿的风险每年约为10%。
失代偿性肝硬化阶段始于与门静脉高压和晚期肝衰竭相关的严重临床并发症:腹水(及相关并发症)、静脉曲张出血、明显的肝性脑病或黄疸,预后较代偿性ACLD差。尽管如此,但比较近几十年出现肝硬化并发症的预后可以发现,当前失代偿肝硬化患者的治疗已经取得了巨大进步。如三十年前患者发生静脉曲张出血,每次发作死亡率为40%~50%,而现在死亡率<15%。肝硬化的其他并发症也存在同样的情况。
Dr Bosch: It is time to abandon this term, because, apart from having negative connotations, there is the problem that the term was firstly a specific anatomical diagnosis which requires an invasive liver biopsy for confirmation and refers to an anatomical finding that can coincide with several stages of the disease. So, by itself, the term has very little prognostic significance because the prognosis for cirrhosis is very different in the compensated versus decompensated stages. Biopsy will not tell you if the condition is compensated or decompensated, so it has very little prognostic significance and is not practical in terms of assessing disease, also because it cannot be repeated frequently. It is anecdotal to have this histological diagnosis in many cases, so it is better to refer to the disease as a continuum and qualify the different stages according to each stage’s prognosis and patient characteristics.
Dr Bosch: Compensated advanced chronic liver disease (ACLD) can persist for many years without a lot of discomfort for the patient, and usually totally asymptomatic. When we have a patient in this stage, what we want is to prevent decompensation, which is when the disease becomes more severe with a high mortality. We know a patient decompensates when they develop complications from portal hypertension. The first thing we do with a compensated patient is to assess if they have portal hypertension, as that determines the degree of risk of decompensating. Having no portal hypertension does not require a lot of treatment effort. If the patient already has portal hypertension, a closer look is required as the risk for decompensating is around 10% per year.
Dr Bosch: Progress has been enormous. When we compare the prognosis of the complications of cirrhosis, like variceal bleeding, for instance, just thirty years ago, it was 40-50% mortality per episode, whereas nowadays, it is <15%. The same has happened with other complications of cirrhosis. Even though cirrhosis is a very severe disease when it decompensates, we have good treatments for these patients that prevent them dying from those complications. We can significantly prolong their life expectancy. In cases of decompensated cirrhosis, we need to first treat the acute decompensation event, and then prevent further decompensation. For this we have different stages of medical therapy, which can be optimized for patients with the most severe liver disease with the option for liver transplantation, the only definitive cure for the disease. So the prognosis for these patients has changed markedly over the last thirty years, with things much better than they were. We have hope for these patients today that was not present before. And this is continuing to improve. The prognosis for decompensated cirrhotics is likely to be even better in a few years time with new treatments and strategies for these patients.