导管扩张Duct Dilation · 包皮腺 · 雄性生殖系统 · NTP ntp-0453
诊断要点：囊肿（cyst）和导管扩张应记录并分级。若双侧腺体均受累，诊断应限定为双侧性（双侧（bilateral）），严重程度分级应基于受累更严重的腺体。
病变描述
Figure 1、Figure 2 显示若干囊性结构；大多数衬覆扁平上皮，为扩张的导管。导管扩张（ductular dilation）的特征可能为积聚明亮的嗜酸性物质，符合角蛋白及角蛋白碎屑（Figure 3、Figure 4）。扩张导管的衬覆上皮常呈萎缩。导管扩张随年龄增长而加重。
诊断与分级建议（NTP 共识）
囊肿（cyst）和导管扩张应记录并分级。若双侧腺体均受累，诊断应限定为双侧性（双侧（bilateral）），严重程度分级应基于受累更严重的腺体。潜在的治疗相关效应应在病理学描述中记录。
图谱
英文原文
展开 NTP 官方英文描述与建议
Comment：
Figure 1 and Figure 2 show several cystic structures; most are lined by flattened epithelium and are dilated ducts. Ductular dilation may be characterized by accumulation of brightly eosinophilic material consistent with keratin and keratin debris ( Figure 3 and Figure 4 ). The lining epithelium of dilated ducts is often atrophic. Ductular dilatation increases with age.
Recommendation：
Cyst and ductular dilatation should be recorded and graded. If both glands are involved, the diagnosis should be qualified as bilateral and the severity grade based on the more severely affected gland. Potential treatment-related effects should be documented in the pathology narrative.
来源与引用
原始条目：https://ntp.niehs.nih.gov/atlas/nnl/reproductive-system-male/preputial-gland/Duct-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. Duct Dilation (preputial-gland). LabSmart 中文版：
https://www.labsmart.cn/ntp/preputial-gland-duct-dilation.html
中文图谱总页（可展开对照全部 595 条）：https://www.labsmart.cn/ntp-atlas.html#preputial-gland-duct-dilation