摘要
目的探求自身免疫性胰腺炎(AIP)的影像特征。方法 12例经病理检查或类固醇激素治疗证实的 AIP 患者接受 MRI 检查,10例接受了 CT 检查,3例进行了经内镜逆行胰胆管造影(ERCP)检查,对所有影像资料进行回顾性分析。结果 9例 AIP 表现为胰腺弥漫性肿大,3例为局限性肿大。病变区在 T_1WI 上信号明显降低,在 T_2WI 上信号轻度升高,动脉期强化减弱但出现明显的延时强化。11例在胰腺病变区周围环绕包膜样结构。9例 AIP 伴有胰腺段胆总管的狭窄,3例ERCP 均示胰管不规则狭窄。经类固醇激素治疗的7例 AIP,影像表现都有明显的好转。结论AIP 的影像表现具有特征性,影像检查是诊断 AIP 的重要方法。
Objective To investigate the imaging characteristics of autoimmune pancreatitis （AIP）. Methods MR imaging was performed in 12 patients with AIP proved histopathologically or clinically, of them CT was scanned in 10 patients and endoscopic retrograde （ERCP） in 3. All imaging data were reviewed retrospectively. Results All 12 patients had enlargement of the pancreas either diffusely （ n = 9） or focally （ n = 3 ） . The swollen pancreas was hypointense on T1-weighted images and mildly hyperintense on T2-weighted images. It also demonstrated decreased enhancement on artery phase of dynamic imaging and moderate enhancement on delayed phase images. Capsule-like enhanced rim was found around the swollen pancreas in 11 patients. Stricture of the distal common bile duct was found in 9 patients, and ERCP showed diffuse and irregular narrowing of the main pancreatic duct in 3 cases. At follow-up, pancreatic abnormalities and common bile duct stricture resolved after steroid therapy in 7 patients. Conclusion AIP showed some characteristic imaging findings, and imaging examinations will play an important role in the diagnosis of AIP.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
2007年第1期47-50,共4页
Chinese Journal of Radiology
关键词
胰腺炎
体层摄影术
X线计算机
磁共振成像
Pancreatitis
Tomography, X-ray computed
Magnetic resonance imaging
