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A practical histological approach to the diagnosis of autoimmune hepatitis: experience of an Italian tertiary referral center
Virchows Archiv ( IF 3.5 ) Pub Date : 2021-06-30 , DOI: 10.1007/s00428-021-03122-5
Tania Franceschini 1 , Francesco Vasuri 1 , Paolo Muratori 2 , Luigi Muratori 2 , Maria Guido 3, 4 , Marco Lenzi 2 , Antonia D'Errico 1
Affiliation  

Liver biopsy is crucial for the diagnosis of autoimmune hepatitis (AIH), and new reproducible histological criteria would be highly desirable, especially in acute-on-chronic cases. The aims of the present study were (i) to evaluate the AIH histopathological criteria as a function of the time and modality of AIH onset, and (ii) to validate the count of apoptotic bodies in the portal tracts as a histopathological criterion for AIH diagnosis. Sixty-five patients were retrospectively enrolled: 20 underwent biopsy for the first diagnosis and 45 had a previous histological AIH diagnosis. Biopsies were revised, and all histological variables were collected, including the lymphocytic apoptotic bodies in the portal tracts. Clinical and serological data were revised as well. First-diagnosis patients showed a higher grade of inflammation (p = 0.001), but also worse portal fibrosis (p = 0.001). The apoptotic body count was higher in first-diagnosis patients than in follow-up patients (p = 0.002), and it was strongly correlated to inflammation. Using the apoptotic body count among the simplified AIH score variables, the first-biopsy patients in the “definite” category rose from 42 to 68%. Our results confirm the histopathological criteria proposed by the literature and introduce the count of portal apoptotic bodies for the diagnosis of active AIH, especially in first biopsies without other classic features, as well as in AIH diagnostic score, albeit future studies are required to find a definite cutoff.



中文翻译:

诊断自身免疫性肝炎的实用组织学方法:意大利三级转诊中心的经验

肝活检对于自身免疫性肝炎 (AIH) 的诊断至关重要,非常需要新的可重复的组织学标准,尤其是在急性慢性病例中。本研究的目的是 (i) 评估 AIH 组织病理学标准作为 AIH 发病时间和方式的函数,以及 (ii) 验证作为 AIH 诊断的组织病理学标准的门静脉束中凋亡小体的计数. 回顾性招募了 65 名患者:20 名首次诊断时接受了活检,45 名之前的组织学诊断为 AIH。对活检进行了修订,并收集了所有组织学变量,包括门静脉束中的淋巴细胞凋亡小体。临床和血清学数据也进行了修订。初诊患者表现出更高级别的炎症(p = 0.001),但也有更严重的门静脉纤维化(p = 0.001)。初诊患者的凋亡体计数高于随访患者(p = 0.002),并且与炎症密切相关。使用简化的 AIH 评分变量中的凋亡体计数,“确定”类别中的首次活检患者从 42% 上升到 68%。我们的结果证实了文献提出的组织病理学标准,并介绍了用于诊断活动性 AIH 的门脉凋亡小体计数,尤其是在没有其他经典特征的第一次活检中,以及 AIH 诊断评分中,尽管未来的研究需要找到一个明确的截止。使用简化的 AIH 评分变量中的凋亡体计数,“确定”类别中的首次活检患者从 42% 上升到 68%。我们的结果证实了文献提出的组织病理学标准,并介绍了用于诊断活动性 AIH 的门脉凋亡小体计数,尤其是在没有其他经典特征的第一次活检中,以及 AIH 诊断评分中,尽管未来的研究需要找到一个明确的截止。使用简化的 AIH 评分变量中的凋亡体计数,“确定”类别中的首次活检患者从 42% 上升到 68%。我们的结果证实了文献提出的组织病理学标准,并介绍了用于诊断活动性 AIH 的门脉凋亡小体计数,尤其是在没有其他经典特征的第一次活检中,以及 AIH 诊断评分中,尽管未来的研究需要找到一个明确的截止。

更新日期:2021-06-30
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