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学习笔记:乳腺非典型导管增生ADH病理诊断

  • 2026-02-03 12:51:33
学习笔记:乳腺非典型导管增生ADH病理诊断

      遇到一例乳腺非典型导管增生,出现在硬化性腺病的周围,很好的图像,记录下来,用以区分普通型导管增生(见本公众号2025年6月8日学习笔记:乳腺普通型导管增生(UDH)和非典型导管增生(ADH))。

      非典型导管增生(ADH)是指具有类似低级别导管原位癌DCIS的细胞形态学特点和/或组织结构的一组导管内增生性病变,但它在形态学特征和量化标准上不足以诊断DCIS。

(一)细胞形态学具有低级别细胞核的病变,呈单克隆性增生,形态较一致,细胞排列具有一定极向性。(二)<2mm或<2个导管。

(三)免疫组化:1.ER呈一致性表达。2.CK5/6阴性。

如下图:

免疫组化:ER呈一致性阳性表达。

CK5/6阴性。

复习一下书上关于非典型导管增生ADU的知识点:
     一、定义:非典型导管增生是一种肿瘤性导管内增生性病变,增生细胞与低级别的导管原位癌细胞相似,但范围和(或)程度上达不到诊断导管原位癌的全部标准。
    二、显微镜下:具有低级别导管原位癌及普通型导管增生两种细胞学及构型特点。
1. 质
导管腔内腺上皮细胞增生→形成某些特定的次级结构,这些结构与低级别导管内癌相似,但不完全或仅部分存在于受累的导管横截面中。
①结构异形性:低乳头状、簇状、棒状、拱形、僵硬桥状、筛状(孔内无坏死)、实性和(或)腺样排列。
②细胞异型性:细胞较小,形态单一,边界清除胞质淡染。可见胞质内空泡细胞核常为圆形均匀分布,细染色指细核仁不清和分裂少见。
2.量

①ADH:病变范围有限,定义为:具有低级别DCIS形态的病变,累及单个导管横截面的直径总和 < 2 mm,或者累计范围 < 2个完整的导管横截面。
②低级别DCIS:病变范围超过上述标准。

     三、免疫组化:1.ER呈一致性表达,2.CK5/6阴性。

      四、鉴别诊断:

      乳腺普通型增生UDH:细胞形态多样(大小、形状不一),细胞核常重叠、流水状排列,如下图:

免疫组化:1.ER呈异质性表达,染色表现为强弱不一。如下图:

2.CK5/6镶嵌式阳性(柱状细胞、大汗腺细胞及不成熟增生细胞阴性)。如下图:

声明:以上知识点来源于病理相关书籍及网络,仅用于个人学习记录,侵权删。有自己遇到的病理和部分学习体会,如有错漏,望指出,谢谢。

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  137. /yingpanguazai/ssd/ssd1/www/no.67808.cn/vendor/topthink/think-template/src/template/driver/File.php ( 2.41 KB )
  138. /yingpanguazai/ssd/ssd1/www/no.67808.cn/vendor/topthink/think-template/src/template/contract/DriverInterface.php ( 0.86 KB )
  139. /yingpanguazai/ssd/ssd1/www/no.67808.cn/runtime/temp/6df755f970a38e704c5414acbc6e8bcd.php ( 12.06 KB )
  140. /yingpanguazai/ssd/ssd1/www/no.67808.cn/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000558s ] mysql:host=127.0.0.1;port=3306;dbname=no_67808;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001003s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000276s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000254s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000573s ]
  6. SELECT * FROM `set` [ RunTime:0.000249s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000677s ]
  8. SELECT * FROM `article` WHERE `id` = 465159 LIMIT 1 [ RunTime:0.000497s ]
  9. UPDATE `article` SET `lasttime` = 1770217063 WHERE `id` = 465159 [ RunTime:0.016560s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000464s ]
  11. SELECT * FROM `article` WHERE `id` < 465159 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000692s ]
  12. SELECT * FROM `article` WHERE `id` > 465159 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000658s ]
  13. SELECT * FROM `article` WHERE `id` < 465159 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000813s ]
  14. SELECT * FROM `article` WHERE `id` < 465159 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002306s ]
  15. SELECT * FROM `article` WHERE `id` < 465159 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.010891s ]
0.112286s