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目的:报告7例肝结核并结合有关文献讨论肝结核的CT表现。材料和方法:报告的7例患者均经手术或肝穿病理证实。男3例,女4例;年龄24~58岁(平均50岁)。其中包括粟粒型肝结核、结节型肝结核和结核性胆管炎三个病理类型。结果:(1)粟粒型肝结核CT表现为肝脏弥漫性肿大、密度减低或表现为肝脏肿大伴有多发性粟粒状低密度灶,增强扫描无明显强化。(2)结节型肝结核可表现为肝内局灶性低密度区,增强扫描可有周边性强化;亦可表现为肝内结节状混杂密度灶,其特点是病灶中心密度高,尤其是伴有“粉末”状钙化,周围密度低,增强扫描有轻至中度的环形强化。(3)结核性胆管炎罕见,沿胆管壁走行的钙化、管型结石可能是本病的特点。结论:粟粒型肝结核CT表现缺乏特征性,除非有结核病史或伴有其他脏器结核,否则CT不能做出正确诊断。结节型肝结核和结核性胆管炎的CT表现有一定的特征性,可提示肝结核的诊断。
OBJECTIVE: To report 7 cases of hepatic tuberculosis and to discuss the CT findings of hepatic tuberculosis in combination with related literatures. Materials and Methods: All 7 reported patients were confirmed by surgery or liver biopsy. 3 males and 4 females; aged from 24 to 58 years (average 50 years). Including miliary tuberculosis, nodular tuberculosis and tuberculous cholangitis three pathological types. Results: (1) Miliary tuberculosis CT showed diffuse enlargement of the liver, reduced density or manifested as liver enlargement accompanied by multiple miliary low density lesions, enhanced scan no significant enhancement. (2) nodular liver tuberculosis can be manifested as intrahepatic focal low density area, enhanced scan may have peripheral enhancement; can also be manifested as intrahepatic nodular mixed density lesions, characterized by high density of lesions center, especially Is accompanied by “powdery” calcification, low surrounding density, enhanced scan mild to moderate ring enhancement. (3) Tuberculous cholangitis is rare, calcification along the bile duct wall, tubular stones may be the characteristics of the disease. CONCLUSIONS: Miliary liver CT is characterized by a lack of features. Unless there is a history of tuberculosis or other organ tuberculosis, CT can not make a correct diagnosis. Nodular tuberculosis and tuberculous cholangitis CT has a certain characteristic CT findings may prompt the diagnosis of liver tuberculosis.