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Sorry i have to type English.
I feel nucleolus is a very simplified concept in pathology teaching. The classic teaching is: you see nucleoli in invasive SCC and reparative cells. But in real life what you observed is absolutely true. You can see nucleoli in many situations . You certainly can see it in metaplastic cells. Please note that many cervical/endocervical smears have inflammation, so those metaplastic cells show nucleoli as reactive changes. You do see nucleoli in invasive SCC and adenocarcinoma but the chromatin is much darker in SCC than in adeno. Always remember you can never use one or two rules to assess a specimen. The American saying for that is: all the rules are made to break. It means:
Pay attention to CIN next time. You can even see nucleoli in CINs.
化生细胞也会有核仁,“在涂片上,不成熟性化生细胞的胞浆嗜碱性,淡染、花边状、边界不清楚、胞浆内可见小空泡,核圆形,染色质均匀细颗粒状,核仁较明显,核浆比稍高于成熟细胞。”(根据网络上的资料)
图片见:http://screening.iarc.fr/atlaschcyto_list.php?cat=D5b&lang=1
IARC网站的解释:鳞状化生
鳞状化生是移行带常见的现象。柱状上皮通过其下的储备细胞增生被更具保护功能的复层鳞状上皮取代。储备细胞逐渐鳞状分化,先是不成熟的,然后是较成熟的化生上皮。有时化生细胞有分泌空泡。在细胞学上,储备细胞增生很难与不成熟化生区别,合体状聚集的裸核可以提示储备细胞增生。鳞状化生细胞可单个散在、呈松散粘附的细胞群或成片出现,通过胞浆突细胞相互连接(蜘蛛样)。化生细胞大小形状不同,小的不成熟化生大小与小组织细胞相似,大的与外底层细胞(15-20微米)相似; 可以是圆形、卵圆形、三角形,有时有尾或呈蝌蚪型。不成熟化生细胞胞界不清,而较成熟的化生细胞有明确的胞界。化生细胞的核轻度增大(与中层细胞比较),染色质细颗粒状、分布均匀,核膜光滑,核仁不增大。胞浆可以淡染、花边样或强嗜碱性,有时有空泡,也可以有双向染色(多彩)。
jiangxiaoyu 离线