Hepatic Biliary Adenofibroma: Histological Characteristics, Diagnostic Challenges, and Its Role as a Precursor to Intrahepatic Cholangiocarcinoma.

Xiaoyan Liao, Xuchen Zhang
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引用次数: 0

Abstract

Hepatic biliary adenofibroma is an exceedingly rare biliary neoplasm that primarily affects adults. It typically presents as a solitary mass composed of low-grade microcystic and tubuloglandular bile duct structures, which are lined by low columnar to cuboidal non-mucin-producing biliary epithelium and supported by abundant fibrous stroma. Histologically, it resembles the Von Meyenburg complex but is much larger in size and often shows cytologic atypia. Although considered benign, emerging case studies and analyses suggest that biliary adenofibroma may serve as a precursor lesion to intrahepatic cholangiocarcinoma. However, its extreme rarity, coupled with an incompletely understood histogenesis, perpetuates diagnostic uncertainty and may lead to misclassification with other similar entities. This review consolidates the current understanding of the histopathological and molecular characteristics of biliary adenofibroma, highlights its differential diagnosis, explores its potential progression to cholangiocarcinoma, and discusses unresolved questions while proposing future research directions.

肝胆道腺纤维瘤:组织学特征、诊断挑战及其作为肝内胆管癌前兆的作用。
肝胆道腺纤维瘤是一种极为罕见的胆道肿瘤,主要发生于成人。典型表现为孤立肿块,由低级别微囊和管状腺胆管结构组成,由低柱状至立方状不产生黏液的胆管上皮排列,并由丰富的纤维间质支撑。在组织学上,它类似于Von Meyenburg复合体,但在大小上要大得多,并经常表现出细胞学上的异型性。虽然胆道腺纤维瘤被认为是良性的,但新出现的病例研究和分析表明,胆道腺纤维瘤可能是肝内胆管癌的前兆病变。然而,其极其罕见,加上不完全了解的组织发生,使诊断不确定性长期存在,并可能导致与其他类似实体的错误分类。本文综述了目前对胆道腺纤维瘤的组织病理学和分子特征的认识,强调了其鉴别诊断,探讨了其发展为胆管癌的可能性,并讨论了尚未解决的问题,同时提出了未来的研究方向。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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