The frequency of uterine malformations is estimated in the general population to be between 1 and 4%. The bicornuate uterus accounts for about half of uterine abnormalities. The conception of a pregnancy and its evolution to term on this uterine abnormality is rare. During pregnancy, this malformation is asymptomatic and may go unnoticed in the absence of prenatal care. Ultrasound is essential for the diagnosis, which is often difficult in an environment of socio-economic precariousness and low technical facilities. We present the diagnostic difficulties, the therapeutic aspects and the obstetric prognosis of an unusual case of a unicervical bicornuate uterus revealed during a laparotomy which is both exploratory and diagnostic. Treatment consisted of close monitoring until 38 weeks when the patient underwent a scheduled cesarean section.