Two other confusing issues often arise during processing
and slide review. First, thinning of the anterior lower
uterine segment is not equivalent to increta/percreta.
Thinning is a normal physiologic process and may be due
to stretching during pregnancy or descent of the fetal head
[10–12]. A c-section scar may be particularly vulnerable to
stretching under the pressure of the pregnancy, with altered
vascularization. On microscopy, cases that involve a prior
c-section scar are difficult to distinguish from other early