Contrast subsequently filled the right fallopian tube with spillage into the peritoneal cavity. There was no visualization of the left horn of the uterus or of the left fallopian tube. Physical exam was then performed showing the presence of only one cervix. These findings are consistent with a unicornuate unicollis uterus. Unicornuate, unicollis uterus.
Uterine anomalies are consistent with anomalies of fusion of the paramesonephric ducts.
Lack of fusion of the paramesonephric ducts in a localized area or along the length of the ducts cause different types of uterine malformations. Fusion is usually completed by the eighteenth week of fetal life. The first type of abnormality from this type of malformation is uterine didelphis. In this anomaly there are two vaginas, two cervices, and two uterine cavities. Each corpus of the uterus has its own fallopian tube.