Abstract
A primigravida received fetoscopic laser photocoagulation treatment at 25(+1) weeks gestation as a chorioangioma enlarged to 61 × 46 × 52 mm. However, a cesarean section was performed due to the chorioangioma separated from the placenta at 32(+2) weeks gestation. As the chorioangioma's blood supply were blocked, it was possible to provide expectant treatment.