en Gynecology & Obstetrics Gynecology & Obstetrics case report case report Abstract <p>  Bicornuate uterus is class IV and septate uterus is class Vin uterine anomaly classification. Bicornuate uterus is almost always treated by laparotomy and metroplasty. But the treatment of choice for septate uterus is hysteroscopic metroplasty. Bicornuate- septate uterus which is described in this paper is a new class of uterine anomaly(between class IV & V). The advantages of hysteroscopic metroplasty to laparotomy and metroplasty have been proven previously. It is important to know if the uterine anomaly is pure bicornuate or bicornuate-septate. In the latter case, we suggest the first line of operation should be hysteroscopic metroplasty. </p> bicornuate-septate uterus, uterine anomaly, Mullerian anomalies,hysteroscopic metroplasty, laparotomy and metroplasty. 98 100 http://mjiri.iums.ac.ir/browse.php?a_code=A-10-1-50&slc_lang=en&sid=1 Nasrin Moghadami-TabrizI ivfdrashrafi@yahoo.com. 20031947532846001616 20031947532846001616 Yes Tehran University of Medical Sciences, Mirza Kochak Khan Hospital, Obstetrics and Gynecology Department. Maryam Mokhtari-Derakhshanfard 20031947532846001617 20031947532846001617 No Shahid Beheshti Medical University, Tehran, Iran. Hormoz Dabir-Ashrafi 20031947532846001618 20031947532846001618 No Obstetrics and Gynecology Department, Head of Dr. Dabirashrafi Endoscopy & Fertility Research Center, Tehran Universityof Medical Sciences, Tehran, Iran. Fahime Iravani 20031947532846001619 20031947532846001619 No Dr. Dabirashrafi Endoscopy & Fertility Research Center, Tehran University of Medical Sciences. Shahram Shams 20031947532846001620 20031947532846001620 No Dr. Dabirashrafi Endoscopy & Fertility Research Center, Tehran University of Medical Sciences. Babak Dabir-Ashrafi 20031947532846001621 20031947532846001621 No Dr. Dabirashrafi Endoscopy & Fertility Research Center, Tehran University of Medical Sciences.