Cesarean scar pregnancy is one of the rarest forms of ectopic pregnancy, located in the scar from a previous cesarean section. There are few reports of such pregnancies, and there is no consensus about the best management. Herein is reported a case of cesarean heterotopic pregnancy, diagnosed at 6 weeks' gestation and successfully treated via transvaginal ultrasound-guided potassium chloride injection and gestational sac aspiration, with preservation of the intrauterine pregnancy. Journal of Minimally Invasive Gynecology (2012) 19, 671-673 (c) 2012 AAGL. All rights reserved.