目的总结自身免疫性胰腺炎（AIP）的影像学特点。 方法回顾性分析13例经手术病理学检查或糖皮质激素治疗证实的AIP患者的临床资料。 结果13例均行CT检查，7例同时行MRI检查、DWI扫描及磁共振胰胆管造影（MRCP）检查，2例同时行超声检查。8例表现为胰腺弥漫性肿大，4例表现为胰腺局限性肿大，1例表现为胰腺混合型肿大。CT动态增强扫描结果提示，胰腺病变呈“雪花状”渐进性强化，T1WI信号减低，T2WI信号略高，DWI信号增高；MRCP检查可见胆总管胰内段呈“鸟嘴样”狭窄；超声检查显示胰腺病变部位肿大，回声减低。 结论AIP具有典型的影像学特征，影像学检查是发现和诊断AIP的重要手段。
ObjectiveTo systematically review the clinical features of chronic fatigue syndrome (CFS) cases with pathogens infection. MethodsWe electronically searched databases including VIP, WanFang Data, CNKI, CBM, PubMed, MEDLINE, EMbase, The Cochrane Library, Web of Science, Elsevier and Google Scholar from 1994 to 2014 for CFS-related studies. Two reviewers independently screened literature and extracted data. Then we systematically reviewed and analyzed the information on demographic characteristics, clinical manifestations, types of infected pathogens, and results of some biochemical examinations. ResultsA total of 84 studies (case reports and case series) involving 2 565 CFS cases from 18 countries were included. The major infected pathogens of included CFS cases were mycoplasma, EB virus, intestinal virus, Bernat rickettsia, human-herpes virus, and Gram-negative intestinal bacteria. Fifty-seven studies reported that there might be associations between the pathogenic infection and CFS pathogenesis. Although there were different types of CFS-related pathogens, almost all the studies inferred that pathogens infection linked with immune dysfunction, which might cause CFS symptoms. ConclusionThere may be associations between the pathogenic infection and CFS pathogenesis.