Placenta creta and placenta praevia creta

The number of multinucleated trophoblastic giant cells in the basal decidua is decreased in retained placenta

“…Although defects in the basal decidua are a focal problem, it seems unlikely that this was caused by our sampling technique, as two previous studies using comparable sampling technique reported focally absent decidua in 100% of cases of placenta accreta 8 9. We feel that our one case of RP with a defect in the basal decidua, and which was clinically diagnosed as PA, should be histologically classified as placenta accreta.…”

“…The histological definition of placenta accreta is that of defects in the basal decidua and myometrial fibres attached to the basal decidua 7 8. Placenta accreta, as demonstrated by (partial) absence of basal decidua,7 8 9 is associated with damage caused by prior uterine surgery, including caesarean section and curettage, placenta praevia and advanced maternal age 5 6. Such associations are not clear for PA 10 11 12…”

“…Frank and Kaufmann postulated that the main mechanism by which trophoblast cells lose their initial invasive character is syncytial fusion that results in their incorporation into multinucleated trophoblastic giant cells (MTGCs) 14 15 16. This concept was supported by the observation of relative absence of MTGCs in human postpartum hysterectomy specimens of placenta increta and percreta,9 whereas normal placentas contain MTGCs in the basal decidua in 100% and in the myometrium in more than 50% of cases 13…”

Placenta praevia accreta following caesarean section

“…It is sub-classified into accreta, increta and percreta depending on the depth of penetration of the uterine wall. Placenta accreta can be complete, partial or limited to focal areas (Khong and Robertson, 1987). It is very uncommon in primigravidae.…”

Urological Manifestations of Placenta Percreta

“…The arcuate artery originates from the uterine artery [7]. Both the uterine artery and arcuate artery are located within the myometrium [7]. …”