FIGURE 1.

Hematoxylin and eosin staining for CSD in the CSS and non‐CSS groups. (A) Microscopic findings in the CSS group. There is no endometrium on the CSD surface; however, adenomyosis is observed under the CSD (scale bar: 1000 µm). The enlarged image of the squared part is shown in the lower left corner (scale bar: 200 µm). (B) The endometrium covered the CSD surface in the non‐CSS group. Macroscopic findings are shown in the upper right corner (scale bar: 1000 µm). CSD, cesarean scar defect; CSS, cesarean scar syndrome