Rupture of hidden abnormal myometrial vessels during cesarean delivery of a patient with subserosal leiomyoma: A possible pathogenesis of sudden-onset disseminated intravascular coagulation

We report a case of sudden-onset disseminated intravascular coagulation during cesarean delivery for a patient with a subserosal leiomyoma. Rupture of hidden anastomotic vessels resulted in a significant decrease in fibrinogen levels and uncontrolled bleeding. Uterine venous flow disturbance caused by subserosal leiomyoma compression can possibly cause such a situation.