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Table 2 Development of the new classification system; CONUTA proposal for the classification of female genital tract malformations; it has been sent to the participants together with the results of the first round just before the questionnaire of the second round

From: The ESHRE–ESGE consensus on the classification of female genital tract congenital anomalies

  Main class Main sub-class Co-existent sub-class
Uterine anomaly Cervical/vaginal anomaly
Class 0 Normal uterus   Cervix
C0 Normal
Class I Dysmorphic uterus a. T-shaped C1 Septate
b. Infantilis C2 Doublenormal
Class II Septate uterus a. Partial C3 Unilateral aplasia / dysplasia
b. Complete C4 Aplasia/dysplasia
Class III Dysfused uterus (including dysfused “septate”) a. Partial  
b. Complete Vagina
Class IV Unilaterally formed uterus a. Rudimentary horn with cavity (communicating or not) V0 Normal vagina
V1 Longitudinal non-obstructing vaginal septum
b. Rudimentary horn without cavity/aplasia (no horn) V2 Longitudinal obstructing vaginal septum
Class V Aplastic/dysplastic a. Rudimentary horn with cavity (bi- or unilateral) V3 Transverse vaginal septum/imperforate hymen
b. Rudimentary horn without cavity (bi- or unilateral)/aplasia V4 Vaginal aplasia
Class VI Unclassified malformations