Yuan Jie, Liu Kun, Liu Mengxiao, Zhan Songhua
Department of Radiology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, CHN.
Department of Pathology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, CHN.
Cureus. 2022 Jul 20;14(7):e27082. doi: 10.7759/cureus.27082. eCollection 2022 Jul.
Bile duct adenoma (BDA) is a benign tumor that arises from the epithelium of the intrahepatic bile ducts. Herein, we present a case and discuss the characteristic magnetic resonance imaging (MRI) features of intrahepatic BDA by radiologic-pathologic correlation. A 41-year-old male visited our hospital. He was incidentally shown to have a liver-occupying lesion during a routine medical examination. MRI revealed a 16 mm × 17 mm × 18 mm circular hepatic mass occupying segment 2 of the liver. It showed low signal intensity on T1-weighted images (T1WI) and high signal intensity on T2-weighted images (T2WI). Diffusion-weighted imaging (DWI) MRI showed a ring of high intensity. Gadolinium ethoxybenzyl diethylenetriaminepentaacetic (Gd-DTPA) dynamic enhanced scanning showed a prolonged "ring enhancement" pattern. It showed a ring of high intensity in the hepatobiliary specific period and low signal peripheral and central of the tumor. The pathology result of the surgical resection showed a diagnosis of intrahepatic BDA. Postoperatively, the patient is currently under outpatient observation for seven months with no apparent recurrence. Intrahepatic BDA can be characterized as a small circular lesion located in the liver. MRI and pathologic features are well characterized in this tumor. MRI enhancement plays an important role in the diagnosis and evaluation of BDA.
胆管腺瘤（BDA）是一种起源于肝内胆管上皮的良性肿瘤。在此，我们报告一例病例，并通过放射学 - 病理学相关性探讨肝内BDA的特征性磁共振成像（MRI）表现。一名41岁男性就诊于我院。他在常规体检中偶然发现肝脏有占位性病变。MRI显示肝脏第2段有一个16 mm×17 mm×18 mm的圆形肝肿块。其在T1加权像（T1WI）上呈低信号强度，在T2加权像（T2WI）上呈高信号强度。扩散加权成像（DWI）MRI显示为高信号环。钆乙氧基苄基二乙三胺五乙酸（Gd - DTPA）动态增强扫描显示为持续的“环状强化”模式。在肝胆特异性期显示为高信号环，肿瘤周边和中心为低信号。手术切除的病理结果显示诊断为肝内BDA。术后，患者目前门诊观察7个月，无明显复发。肝内BDA可表现为肝脏内的小圆形病变。该肿瘤的MRI和病理特征表现明确。MRI增强在BDA的诊断和评估中起重要作用。
