胆汁淤积性黄疸的一种病因

2011-06-07 MedSci原创 MedSci原创

 一名44岁的罗马尼亚女性,有哮喘、癫痫、非胰岛素依赖型糖尿病史,患抑郁1年余,伴体重逐渐下降,瘙痒3月余,尿色深和大便灰白数周。患者否认有腹痛。       临床检查发现患者腹软无压痛,无内脏肿大。患者并非临床黄疸,无淋巴结肿大。       肝功能检测显示胆红素(3

 一名44岁的罗马尼亚女性,有哮喘、癫痫、非胰岛素依赖型糖尿病史,患抑郁1年余,伴体重逐渐下降,瘙痒3月余,尿色深和大便灰白数周。患者否认有腹痛。

       临床检查发现患者腹软无压痛,无内脏肿大。患者并非临床黄疸,无淋巴结肿大。

       肝功能检测显示胆红素(34 μmol/l;正常范围是1–14μmol/l)、碱性磷酸酶 (449 IU/l; 4–105) 以及天冬氨酸转氨酶 (203 IU/l; 1–31) 升高。白蛋白是正常的,血沉上升至51 mm/h(正常范围是0-20)。自身抗体筛查试验(包括抗平滑肌和抗线粒体抗体)阴性。胸部X线检查正常。
 
     患者被诊断为梗阻性黄疸,做了腹部超声扫描后,又做了腹部CT扫描(图1)。随后进行ERCP检查,显示胆总管远端的有一段规则、平滑的胆管狭窄,长 1-2 cm,位于壶腹部近端1 cm,壶腹部有外压缩的特征(图2)。用气囊扩张该处狭窄并插入一个塑料支架。经此处理后,患者肝功能恢复正常。细胞刷检显示腺上皮细胞正常。


图1 CT 


图2 内镜逆行胰胆管造影检查
 
       由于怀疑有恶性肿瘤,多学科会诊讨论该病例后进行了剖腹探查。术中发现一根厚壁胆管,且沿着肝门和腹腔干的淋巴结广泛性肿大。从淋巴结取了几处活检进行最终组织学检查(图3),然后按标准技术关腹。

图3 淋巴结组织学
 

问题:
腹部CT扫描看到了什么?淋巴结活检组织学有什么发现?

答案:CT扫描显示肝内外胆管扩张,伴广泛性肝外淋巴结肿大。淋巴结活检的组织学显示非干酪性组织细胞性肉芽肿,有巨细胞和星状小体。组织学显示抗酸杆菌和真菌染色是阴性的。

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    2011-06-09 楚秀娟
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