中肾管残余Mesonephric Duct Remnant · 子宫 · 雌性生殖系统 · NTP ntp-0527
诊断要点：子宫——中肾管残余应当诊断，但无需分级，除非分级有助于表征处理效应。
病变描述
中肾管残余（mesonephric duct remnant）（Figure 1）表现为由假复层柱状上皮和平滑肌衬覆的盘曲或分支状小管，令人联想到附睾管和输精管中所见的结构。通常这些结构见于子宫角或子宫体的侧方附着处，可为单侧或双侧。它们通常位于子宫阔韧带附着部位。这些胚胎残余必须与肿瘤相鉴别，肿瘤会表现出其肿瘤类型所特有的生长方式。
诊断与分级建议（NTP 共识）
子宫——中肾管残余应当诊断，但无需分级，除非分级有助于表征处理效应。
图谱
英文原文
展开 NTP 官方英文描述与建议
Comment：
Remnants of the mesonephric duct ( Figure 1 ) appear as coiled or branching tubules lined by pseudostratified columnar epithelium and smooth muscle and are reminiscent of that seen in the ductus epididymides and vas deferens. Typically these structures are seen laterally attached to the uterine horns or body, and they may be unilateral or bilateral. They are typically present at the site of attachment of the broad ligament of the uterus. These embryonic remnants must be differentiated from neoplasms, which display growth patterns characteristic of the tumor type.
Recommendation：
Uterus - Mesonephric duct remnant should be diagnosed but need not be graded unless grading would help characterize a treatment effect.
来源与引用
原始条目：https://ntp.niehs.nih.gov/atlas/nnl/reproductive-system-female/uterus/MesonephricDuctRemnant
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. Mesonephric Duct Remnant (uterus). LabSmart 中文版：
https://www.labsmart.cn/ntp/uterus-mesonephric-duct-remnant.html
中文图谱总页（可展开对照全部 595 条）：https://www.labsmart.cn/ntp-atlas.html#uterus-mesonephric-duct-remnant