Effect of cervical changes on the cesarean scar area and niche formation after preterm and term cesarean sections

Objective The purpose of this study is to assess the scar area and niche formation after cesarean section in women who had preterm or term deliveries and underwent cesarean section at various stages of labor. Method This prospective cohort study consists of cases who underwent the first cesarean section for different obstetric reasons. The patients were divided into four groups regarding gestational age and cervical dilatation. After a cesarean section, all patients were called for vaginal ultrasonography control at 12 weeks. The location of the scar and the presence of a niche were evaluated. The residual (RMT), proximal, and distal myometrial thicknesses were evaluated where the scar and niche were located. Results A total of 87 cases were included in the study. There was no difference in the prevalence of niche between the groups ( p > 0.05). RMT and proximal and distal myometrial thickness were not different between the 37 ≥ week and 37