Milovanov A P
Arkh Patol. 1991;53(12):3-9.
Existing morphologic classifications of placenta immaturity are analyzed on the basis of stages of the placenta villi normal histogenesis. 6 variants of its pathologic immaturity are distinguished: mesenchymal, embryonal, intermediate and differentiated villi, variant of chaotic sclerotized villi, variant of precocious villi maturation. These variants result in the foetal hypotrophy or its death at all stages of its antenatal development. 2 variants comprise a relative placenta immaturity: variant of a dissociated development of kotiledons and that of deficiency of terminal specialized villi. They occur in both risk groups of newborns and in normal pregnancy. Revealing of the above variants allows one to determine the time of the antenatal damage of developing placenta.
基于胎盘绒毛正常组织发生的阶段，对现有的胎盘不成熟形态学分类进行了分析。区分出其病理不成熟的6种变体：间充质、胚胎、中间和分化绒毛、混乱硬化绒毛变体、早熟绒毛成熟变体。这些变体在胎儿产前发育的各个阶段都会导致胎儿发育迟缓或死亡。2种变体构成相对胎盘不成熟：绒毛叶分离发育变体和终末特化绒毛缺乏变体。它们在新生儿的高危组和正常妊娠中均会出现。上述变体的发现有助于确定发育中胎盘产前损伤的时间。
