# 血管扩张（Angiectasis）

- 器官 / 系统：胰岛 / 内分泌系统（pancreatic-islets / endocrine-system）
- NTP 数据编号：ntp-0094
- 规范 URL：https://www.labsmart.cn/ntp/pancreatic-islets-angiectasis.html
- 中文图谱总页锚点：https://www.labsmart.cn/ntp-atlas.html#pancreatic-islets-angiectasis
- 原始出处：https://ntp.niehs.nih.gov/atlas/nnl/endocrine-system/pancreatic-islets/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
血管扩张（angiectasis）通常表现为形态不规则的扩张腔隙，腔内含有红细胞和/或血浆，内皮细胞衬覆极少。

## 病变描述（中文）
血管扩张（angiectasis）通常表现为形态不规则的扩张腔隙，腔内含有红细胞和/或血浆，内皮细胞衬覆极少。这是一种自发性改变，已知与给药无关，也不因给药而加重。通常一张切片中仅见一个受累的胰岛。红细胞周围也可能伴有含铁血黄素（hemosiderin）色素沉着（Figure 4）。

## 诊断与分级建议（NTP 共识，中文）
出现该改变时应予以诊断并分级。若血管扩张不广泛，严重程度分级通常为极轻微（minimal）。若在其他组织中观察到血管扩张或相关改变，应在病理学描述中补充相应评论。若存在含铁血黄素，则无需同时诊断色素沉着。

## 英文原文 · Comment
Angiectasis typically involves irregular dilated spaces that contain erythrocytes and/or plasma with a negligible endothelial cell lining. This is a spontaneous change with no known association with, or exacerbation by, treatment. Typically only one affected islet is seen in a section. There may also be hemosiderin pigment along with erythrocytes ( Figure 4 ).

## 英文原文 · Recommendation
When present, this change should be diagnosed and graded. A severity grade will most often be minimal if the angiectasis is not widespread. If angiectasis or related changes are observed in other tissues, a comment to this effect should be added to the pathology narrative. If hemosiderin is present, a concurrent diagnosis of pigment is not necessary.

## 配图
- https://www.labsmart.cn/ntp-atlas-images/ntp_0251.jpg
- https://www.labsmart.cn/ntp-atlas-images/ntp_0259.jpg

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