 - (hemi-uterus) incorporates all cases of unilateral formed uterus. Hemi-uterus is defined as the unilateral uterine development; the contralateral part could be either incompletely formed or absent. Class U0 - (aplastic uterus) incorporates all cases of uterine aplasia, formation defect characterized by the absence of any fully or unilaterally developed uterine cavity. Class U0