[Post-cesarean uterine scar].

The American College of Obstetricians and Gynecologists recommends that women with one previous cesarean section be allowed a trial of labor. One of the exclusions to this recommendation are women with 2 or more previous cesarean section because of the risk of uterine dehiscence. We measured fibrosis in a sample obtained from the uterine scar region, finding the higher rate of fibrosis (35.7%) for the group with one previous cesarean section. We conclude that uterine scar shows no clear differences after one, two or more cesarean sections, so the risk of uterine scar dehiscence could be similar.