目的探讨黄色肉芽肿性肾盂肾 炎（XGP）的影像学诊断及其鉴别诊断。 方法 回顾性分析11例经手术病理证实的 黄色肉芽肿性肾盂肾炎的影像征象，全 部病例均行X线（KUB+IVP）、B超、CT检 查。结果 X线：肾轮廓增大、肾结石及肾 盂肾盏形态改变。B超：患肾显示增大， 肾实质内占位性病变、结石和肾周改变。 CT：肾实质内局灶性或弥漫性的囊实性病 变，增强扫描后实性或病灶边缘强化，中 心不强化，部分合并结石，病变常累及肾 外结构。结论 CT对诊断黄色肉芽肿性肾 盂肾炎有较高的影像学价值，确诊需结合 实验室检查及临床病理。

Objective To study the imaging diagnosis and differentiation of xanthogranulomatous pyelonephritis(XGP). Methods Imaging findings of 11 patients with histologically confirmed xanthogranulomatous pyelonephritis was retrospectively analyzed, all of patients was examed by x-xay, US and CT. Results x-ray: the enlargement of kindney shadow, distorsion of calyces and renal calculus wer observed. Sonography:space occupying lesion,renal calculus and and extensive infilitation were seen. CT features included :the disease appeared as focal or diffuse lesions, solid or lesions edge was reinforced after enhancement scanning, center was not reinforced, some was with calculi, lesions often extensively infilitrate to the perirenal or pararenal space. Conclutions CT has higher imaging value in diagnosis of XGP. diagnosis should combined with laboratory tests and clinical pathology.