Kass D A, Hricak H, Davidson A J
AJR Am J Roentgenol. 1983 Oct;141(4):731-4. doi: 10.2214/ajr.141.4.731.
Four patients with malignant renal masses showed no abnormality on excretory urograms with tomography. Of the four lesions, two were primary renal cell carcinomas, one was a metastatic focus from a contralateral renal cell carcinoma, and one was a metastatic lesion from rectal adenocarcinoma. A normal excretory urogram should not be considered sufficient to exclude a clinically suspected malignant renal mass. In such an instance, diagnostic evaluation should be pursued using a method capable of topographic anatomic display, such as computed tomography or sonography.
4例患有恶性肾肿块的患者在排泄性尿路造影加体层摄影检查中未显示异常。这4个病灶中，2个是原发性肾细胞癌，1个是对侧肾细胞癌的转移灶，1个是直肠腺癌的转移灶。排泄性尿路造影正常不应被视为足以排除临床怀疑的恶性肾肿块。在这种情况下，应采用能够进行断层解剖显示的方法，如计算机断层扫描或超声检查来进行诊断评估。
