Innocenti M, Mazzoni A, Setti G P
U.O. Nefrologia e Dialisi, USSL 13 Livorno.
Arch Ital Urol Nefrol Androl. 1991 Jun;63 Suppl 2:111-4.
Ultrasonography (US) has recently been considered in nephrology as the imaging method of choice in the differential diagnosis of acute renal failure (ARF). A dilated renal collecting system is the hallmark of obstructive nephropathy (ON). We report 4 cases of ARF due to ON in which US detected no dilatation of collecting system. Similar data were obtained by computer tomography (TC). The normal size and structure of the kidneys and the clinical suspicion prompted us to perform retrograde pyelography which revealed ON. Ureteral catheterization determined a marked improvement of renal function in all the patients (pts). 2 pts were one kidney, 3 pts had renal stones, in 2 pts dehydration and sepsis were present. We conclude that ON has not ever been excluded on the criterion of absence of dilated urinary tract from US and TC.
超声检查（US）最近在肾脏病学中被视为急性肾衰竭（ARF）鉴别诊断的首选成像方法。肾集合系统扩张是梗阻性肾病（ON）的标志。我们报告了4例因ON导致的ARF病例，其中US未检测到集合系统扩张。计算机断层扫描（CT）也得到了类似的数据。肾脏的正常大小和结构以及临床怀疑促使我们进行逆行肾盂造影，结果显示为ON。输尿管插管使所有患者的肾功能都有显著改善。2例患者为单肾，3例有肾结石，2例存在脱水和败血症。我们得出结论，不能仅凭US和CT未发现尿路扩张这一标准就排除ON。
