Table 3.

Histological scoring system for endometrial repair (Kaitu’u-Lino et al. 2007).

Histological repair grade	Histological description
1	Decidualised tissue. Expansion of stromal compartment, presence of decidual cells. Glands pushed towards the myometrium.
2	Early breakdown. Some loss of structural integrity between decidual cells. Most decidua still intact.
3	Complete breakdown. Complete tissue destruction in decidual zone. No intact decidual tissue. Some sloughing of the endometrium from the myometrium.
4	Early repair. Beginnings of re-epithelialisation. Dissociation of necrotic tissue from the myometrium.
5	Complete repair. Stromal restoration, complete re-epithelialisation. Small amount of luminal debris.