多层螺旋CT血管成像对评价肾脏恶性肿瘤血供来源的价值

目的研究肾恶性肿瘤肾外供血动脉的来源和形成机制，以指导临床治疗。方法对116例肾恶性肿瘤患者行多层螺旋CT增强扫描，分析其肾外供血动脉的特征及形成机制。结果116例患者中42例有肾外供血动脉（共72支），这些患者肿瘤均突破肾包膜；74例无肾外供血动脉，其中41例肿瘤突破肾包膜，33例肿瘤末突破肾包膜，两者差异有统计学意义（X^2=26．18，P〈0．0001）。肾外供血动脉的来源与肿瘤发生的部位有关。结果明确肾恶性肿瘤肾外供血动脉的来源，对于指导临床治疗具有重要的意义。

The study of multi-slice CT angiography in the origin of extrarenal arterial blood supply of renal malignancy and its clinica value

Objective To study the origin and mechanisms of extrarenal arterial blood supply of renal malingnancy for its interventional therapy. Methods Enhancement spiral CT scanning were performed in 116 patients with renal malignancy. The characteristrcs and formation mechanisms of extrarenal arterial blood supply for renal malignancy were analyzed. Results Of the 116 patients , extrarenal arterial blood supply of renal mahgnancy were found in 42 patients and there were 72 branchs. The breakthrough of renal capsule with malignancy were found in those 42 patients. No extrarenal arterial blood supply of renal malignancy was found in 74 patients, including 41 patients with and 33 patients without the renal capsule breakthrough with malignancy. The emerge of extrarenal arterial blood supply of renal malignancy were significantly different（X^2 =26. 18 ,P 〈0. 000 1 ） between the patients with and without the breakthrough of renal capsule with malignancy. The origin of extrarenal arterial blood supply were correlated with the location of the tumor. Conclusion It is important to determine the origin of the extrarenal arterial blood supply in renal malignancy for its interventional therapy.