目的：研究胎盘种植部位中间型滋养细胞病变的发病机理和病理组织学特征，探讨有效的治疗方法。
Objective: to study the pathogenesis, pathological features of placental site intermediate trophoblast disease and to discuss the method of efficient treatment.
结论EPS反应属于中间型滋养细胞为主的妊娠滋养细胞疾病，可能为胎盘部位滋养细胞肿瘤的前期病变。
Conclusions EPS is a kind of gestational trophoblastic disease primarily involving IT. It may be a preneoplastic lesion of placental site trophoblastic tumor (PSTT).
肿瘤由形态多样的上皮样细胞构成，胞质嗜酸性或透亮，来源于中间型滋养细胞。免疫组织化学瘤细胞表达CK、MBP、H CG、HPL等。
The tumor cells were composed of polymorphic epithelioid cells with eosinophilic or clear cytoplasm, and they derived from intermediate trophoblast (it), and could expressed CK, MBP, HCG and HPL.
肿瘤由形态多样的上皮样细胞构成，胞质嗜酸性或透亮，来源于中间型滋养细胞。免疫组织化学瘤细胞表达CK、MBP、H CG、HPL等。
The tumor cells were composed of polymorphic epithelioid cells with eosinophilic or clear cytoplasm, and they derived from intermediate trophoblast (it), and could expressed CK, MBP, HCG and HPL.
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