RESUMO
INTRODUCTION: Cesarean scar pregnancy (CSP) is an uncommon entity, with high morbidity. Its diagnosis is difficult and delays in management are frequent. We report a series of cases of CSP and analysis of the differences in the outcomes depending on the moment of pregnancy in which they are treated. CASE REPORT: Twelve patients with a diagnosis of CSP. Seven of them were diagnosed and treated in the first trimester, often required more than one type of management, but were not transfused or presented complications. The five patients diagnosed lately in the pregnancy, always required cesarean section and emergency hysterectomy, with massive bleeding, transfusions, urinary or vascular complications. DISCUSSION: CSP can be complicated by abnormal placental invasion when pregnancy continuity is allowed. The ideal management is the termination of pregnancy shortly after the diagnosis is made. Our series highlights the diagnostic difficulties that lead to late treatment with frequent complications. CONCLUSION: It is essential to perform routine analysis of the site of implantation of the gestational sac in the first-trimester ultrasonography and the CSP suspected cases should be handled by interdisciplinary teams in experienced centers.