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宫颈原位腺癌(endocervical adenocarcinoma in-situ,AIS)
宫颈原位腺癌( endocervical adenocarcinoma in-situ,AIS):
一、1、几乎全部发生在SCJ的位置;
2、多数与HPV感染有关;
3、病变由表面向深部发展;
4、可见异常细胞突然转变为正常细胞;
5、50%的病例合并高级别CIN。
二、诊断标准:
1、上皮细胞拥挤,细胞呈复层或假复层,腺体结构保存;
2、核增大、拉长,核浆比例增大,胞浆粘液下降;
3、核深染,染色质粗颗粒状;
4、核分裂像多见;
5、可见凋亡小体,位于腺体基底部,见于70%的病例;
6、结构异常,出现乳头、筛孔等。
(AIS:Crowding,Atypia,Mitosis)
【1、low power diagnosis; normal glandular architecture with malignant, darkened glands at squamocolumnar junction involving part or all of epithelium lining glands or forming the surface, composed of hyperchromatic, enlarged, crowded nuclei with coarse chromatin, small single or multiple nucleoli, frequent mitotic figures (mean 18/10 HPF); apoptotic bodies common (mean 16/10 HPF);
2、 may have abrupt transition to normal epithelium;
3、 endocervical type most common; also endometrioid (no mucin production, no goblet cells, no cells with clear or light-staining cytoplasm, cells have scanty cytoplasm with marked nuclear stratification), intestinal types;
4、 may have periglandular inflammation; presence of glands close to thick walled vessels (within diameter of vessel) is suggestive of invasion (Int J Gynecol Pathol 2005;24:125); no extension below normal glands, no infiltration of stroma, no desmoplasia】
免疫组化:Ki67和P16强阳性。CEA浆阳性、VIM(-)、ER/PR(-)、Bcl-2(-)或局灶阳性。
三、亚型:
1、宫颈上皮型:最常见,类似宫颈上皮;
2、子宫内膜样型:形态与子宫增生期内膜相似;
3、肠型:杯状细胞是诊断肠型AIS重要的线索;有时出现胃幽门腺的分化;
4、输卵管型:少见类型,必须满足AIS的诊断标准才能诊断,与输卵管上皮化生鉴别;
5、复层型:形态与腺鳞癌相似,但高倍下复层细胞含细胞内粘液。
四、鉴别诊断:
1、tubal or tuboendometrial hyperplasia (involves only a single gland or portion of a gland, no significant nuclear atypia);
2、nonspecific glandular atypia or dysplasia;
3、invasive adenocarcinoma (infiltrating glands with budding, desmoplasia, extension of glands beyond normal glandular depth);
4、Arias-Stella reaction (usually focal glands or focal portion of glands, hobnail type cells, no/rare mitotic activity);
5、microglandular hyperplasia (polypoid, smaller and more uniform glands, bland nuclei, no mitotic activity);
6、endometriosis (endometrial-type cells with basal nuclei but no atypia; surrounded by endometrial-type stroma which is CD10+);
7、mesonephric remnants (deep in stroma, bland nuclei, have intraluminal secretions);
8、viral induced changes (inflammation present, viral nuclear inclusions)。
病例1、http://bbs.ipathology.cn/article/398771.html
病例2、http://bbs.ipathology.cn/article/286318.html
病例3、http://bbs.ipathology.cn/article/178070.html
病例4、http://bbs.ipathology.cn/article/28289.html
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