中肾管残余Mesonephric Duct Remnant · 输卵管 · 雌性生殖系统 · NTP ntp-0545
诊断要点：输卵管 - 中肾管残余只要存在即应诊断，但无需分级。
病变描述
这些中肾管残余可为单侧或双侧。它们呈管状或囊状结构，衬有上皮，并具有一层平滑肌（Figure 1、Figure 2）。必须将其与卵巢区域的囊肿（如滑囊囊肿）相鉴别。充盈的滑囊在剖检时塌陷，显露其中完整的卵巢。发生于卵巢的囊肿位于卵巢实质内，通常可完整剥离。卵巢旁组织的囊肿特征为子宫系膜内有一个大的充满液体的囊。这些囊肿衬以立方至柱状上皮，周围环绕平滑肌，充满淡染的嗜酸性絮状物。
诊断与分级建议（NTP 共识）
输卵管 - 中肾管残余只要存在即应诊断，但无需分级。
图谱
英文原文
展开 NTP 官方英文描述与建议
Comment：
These remnants of the mesonephric duct may be unilateral or bilateral. They are tubular or cystic structures with an epithelial lining and have a layer of smooth muscle ( Figure 1 and Figure 2 ). These must be distinguished from cysts in the region of the ovary, such as bursa cysts. A distended bursa collapses at dissection, disclosing an intact ovary within it. Cysts occurring in the ovary are found within the ovarian parenchyma and can generally be dissected intact. Cysts of the paraovarian tissue are characterized by a large fluid-filled sac in the mesovarium. These cysts are lined by cuboidal to columnar epithelium, surrounded by smooth muscle, and filled with pale-staining eosinophilic flocculent material.
Recommendation：
Oviduct - Mesonephric duct remnant should be diagnosed whenever present but need not be graded.
来源与引用
原始条目：https://ntp.niehs.nih.gov/atlas/nnl/reproductive-system-female/oviduct/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 (oviduct). LabSmart 中文版：
https://www.labsmart.cn/ntp/oviduct-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#oviduct-mesonephric-duct-remnant