Ginalski J M, Spiegel T, Jaeger P
Department of Radiology, University Hospital, Lausanne, Switzerland.
Radiology. 1992 Feb;182(2):311-4. doi: 10.1148/radiology.182.2.1732941.
To assess the prevalence of intrapapillary linear collections of contrast medium as well as of homogeneous papillary blush on excretory urograms obtained with a low-osmolality contrast medium, iohexol was used in 300 patients. Intrapapillary linear collections of contrast medium (ie, three or more linear collections of contrast material within a papilla) were found in 10 (9.5%) of the 105 patients with renal stone disease and two (1.0%) of the 195 patients without nephrolithiasis (P less than .001). These prevalences are similar to those found in a previous study with use of a high-osmolality contrast medium (sodium amidotrizoate). The difference in the prevalence of homogeneous papillary blush between stone formers and non-stone formers was nonsignificant. The authors conclude that intrapapillary linear collections of contrast medium on excretory urograms obtained with use of a low-osmolality contrast medium should be considered to have the same clinical significance as those on excretory urograms obtained with use of a high-osmolality contrast medium, that is, as indicating the presence of medullary sponge kidney.
为评估使用低渗性造影剂碘海醇进行排泄性尿路造影时，乳头内造影剂线性聚集以及均匀性乳头潮红的发生率，对300例患者进行了研究。在105例肾结石病患者中，有10例（9.5%）发现乳头内造影剂线性聚集（即一个乳头内有三个或更多造影剂线性聚集）；在195例无肾结石的患者中，有2例（1.0%）出现这种情况（P<0.001）。这些发生率与先前使用高渗性造影剂（泛影酸钠）的研究结果相似。结石形成者与非结石形成者之间均匀性乳头潮红发生率的差异无统计学意义。作者得出结论，使用低渗性造影剂进行排泄性尿路造影时出现的乳头内造影剂线性聚集，应被视为与使用高渗性造影剂进行排泄性尿路造影时具有相同的临床意义，即提示髓质海绵肾的存在。
