# 血管扩张（Angiectasis）

- 器官 / 系统：阴蒂腺 / 雌性生殖系统（clitoral-gland / reproductive-system-female）
- NTP 数据编号：ntp-0557
- 规范 URL：https://www.labsmart.cn/ntp/clitoral-gland-angiectasis.html
- 中文图谱总页锚点：https://www.labsmart.cn/ntp-atlas.html#clitoral-gland-angiectasis
- 原始出处：https://ntp.niehs.nih.gov/atlas/nnl/reproductive-system-female/clitoral-gland/Angiectasis
- 授权：美国联邦政府作品，公有领域；引用请标注 NTP Nonneoplastic Lesion Atlas
- 适用说明：仅供科研使用，不用于临床诊断

## 一句话结论
在血管扩张（angiectasis）中，原有的阴蒂腺血管扩张并充满血细胞，伴有阴蒂腺实质的受压（Figure 1、Figure 2）。

## 病变描述（中文）
在血管扩张（angiectasis）中，原有的阴蒂腺血管扩张并充满血细胞，伴有阴蒂腺实质的受压（Figure 1、Figure 2）。应尝试区分血管扩张与血管瘤（hemangioma），尽管这种区分并不总是显而易见。血管瘤往往为边界清楚、无包膜的肿块，由紧密排列的扩张血管腔隙构成。每个血管腔隙均由单层形态正常的内皮细胞围成并衬覆，这些内皮细胞排列于胶原性间隔上，间隔通常较薄，但部分具有宽阔的胶原性间质。血管扩张通常不表现为边界清楚的肿块：扩张的血管通道常不规则地穿行于组织中。血管扩张和血管瘤均可发生邻近实质的受压。

## 诊断与分级建议（NTP 共识，中文）
阴蒂腺——血管扩张：只要存在即应作出诊断并分级。

## 英文原文 · Comment
In angiectasis, preexisting clitoral gland blood vessels become dilated and filled with blood cells, accompanied by compression of the clitoral gland parenchyma ( Figure 1 and Figure 2 ). A distinction between angiectasis and hemangioma should be attempted, although the distinction is not always obvious. Hemangiomas tend to be well-circumscribed, unencapsulated masses composed of tightly packed, dilated vascular spaces. Each vascular space is enclosed and lined by a single layer of normal-appearing endothelial cells aligned on collagenous septa, which are usually thin, although some have broad collagenous stroma. Angiectasis does not usually present as a well-circumscribed mass: the dilated vascular channels often course irregularly through the tissue. Compression of adjacent parenchyma may occur in both angiectasis and hemangioma.

## 英文原文 · Recommendation
Clitoral gland - Angiectasis should be diagnosed and graded whenever present.

## 配图
- https://www.labsmart.cn/ntp-atlas-images/ntp_0591.jpg
- https://www.labsmart.cn/ntp-atlas-images/ntp_0592.jpg

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