扩张Dilation · 输尿管 · 泌尿系统 · NTP ntp-0201
诊断要点：输尿管扩张应予以诊断并评定严重程度分级。若输尿管扩张与受试物相关，研究病理学家应描述该病变为单侧还是双侧。
病变描述
输尿管扩张（同义词：肾盂积水/输尿管积水，hydroureter）最常与梗阻性病变相关。肉眼观察时，常可见其与膀胱扩张及肾盂扩张同时存在。该病变可为单侧或双侧（Figure 1）。在大鼠中，先天性病例以右侧更为多见。已培育出具有自发性输尿管积水与肾积水的NON/Shi小鼠品系及SD/cShi大鼠品系，并可诱导其发生肾盂尿路上皮的增殖性病变。
诊断与分级建议（NTP 共识）
输尿管扩张应予以诊断并评定严重程度分级。若输尿管扩张与受试物相关，研究病理学家应描述该病变为单侧还是双侧。
图谱
英文原文
展开 NTP 官方英文描述与建议
Comment：
Dilation of the ureter (synonym: hydroureter) is most commonly associated with cases of obstruction. Often it can be seen grossly with dilation of the urinary bladder and renal pelvis. It can be either unilateral or bilateral ( Figure 1 ). In rats, congenital cases are more prevalent on the right side. A strain of mouse (NON/Shi) and a strain of rat (SD/cShi) have been developed that have spontaneous hydroureter and hydronephrosis and can be induced to develop proliferative lesions of the renal pelvic urothelium.
Recommendation：
Dilation of the ureter should be diagnosed and assigned a severity grade. If ureter dilation is treatment related, the study pathologist should describe whether the lesion is unilateral or bilateral.
来源与引用
原始条目：https://ntp.niehs.nih.gov/atlas/nnl/urinary-system/ureter/Dilation
图谱总目录：NTP Nonneoplastic Lesion Atlas。 内容属美国联邦政府作品（公有领域），可引用；引用时请标注来源。
建议引用格式：NTP Nonneoplastic Lesion Atlas. Dilation (ureter). LabSmart 中文版：
https://www.labsmart.cn/ntp/ureter-dilation.html
中文图谱总页（可展开对照全部 595 条）：https://www.labsmart.cn/ntp-atlas.html#ureter-dilation