Patel V J
Urologe A. 1978 May;17(3):150-4.
Differential diagnosis of small tumors of the ureter and renal pelvis is often difficult. Retrograde pyelogramm and tri-iodied contrast material is not effective in diagnosing small tumors and their surface condition. A retrograde pyelogram with a tantalum powder solution offers the following advantages: 1. Clearer representation of the tumor surface. 2. X-ray films show sharper contrast. 3. Small tumors could be seen that are not visible with routine contrast material. Preparation of tantalum solution and the technique of retrograde pyelogram are described.
输尿管和肾盂小肿瘤的鉴别诊断往往很困难。逆行肾盂造影和三碘造影剂对诊断小肿瘤及其表面情况无效。钽粉溶液逆行肾盂造影有以下优点：1. 能更清晰地显示肿瘤表面。2. X光片对比度更高。3. 能看到常规造影剂看不到的小肿瘤。文中描述了钽溶液的制备及逆行肾盂造影技术。
