TBS三版判读标准： Syncytiotrophoblast Syncytiotrophoblastic cells are derived from fusion of cytotrophoblastic cells. They can be identified in cervical cytology specimens in late pregnancy and postpartum periods. They can rarely be present for months after delivery. Criteria: 1 Large, multinucleated cells with up to 50 or more nuclei 2 Nuclei are normochromatic with even chromatin distribution but often have irregular nuclear contours. 3 Tapering of granular cytoplasm at one end of cell.

TBS三版图

再看一例 31岁 顺产43天

TBS第三版在非肿肿瘤性改变中增加了妊娠相关细胞改变，包括激素改变、蜕膜细胞、细胞滋养层细胞、合体滋养层细胞、A-S反应细胞等。

产后所见的多核巨一种是多核组织细胞，常伴有萎缩背景，这例没有；另一种是合体滋养细胞，因其附着于胎盘，故其一端变细（tapering）可见一尾，此例有此特点。