Zanke S, Eichhorn K H, Günther M
Zentralbl Gynakol. 1980;102(22):1301-7.
Pathological insertions were diagnosed in 66 of 4, 804 ultrasonic placentograms, beginning with the 13th week of pregnancy. Placental migration, that is displacement towards the fundus of the uterus of the caudal adge of the placenta, was followed up by consecutive checks. Pathological placenta locations were recorded in 4.1 per cent of all cases, up to the 20th week of pregnancy, was found to emanate from migration in the majority of all cases. The process of placental migration usually takes place up to the 30th week of pregnancy and is completed by the 35th week. If pathological insertions were diagnosed after the 20th week f pregnancy, migration was found to take place with much lower incidence. Methodical problems relating to ultrasonographic representation are discussed together with clinical consequences.
在4804例超声胎盘图像中，从妊娠第13周开始诊断出66例病理性植入。通过连续检查对胎盘迁移情况进行随访，即胎盘尾缘向子宫底部的移位。在妊娠20周之前，所有病例中有4.1%记录到病理性胎盘位置，发现大多数病例中的病理性胎盘位置是由迁移引起的。胎盘迁移过程通常在妊娠第30周之前发生，并在第35周完成。如果在妊娠第20周之后诊断出病理性植入，则发现迁移发生率要低得多。文中讨论了与超声图像表现相关的方法学问题以及临床后果。
