Final answer:
Uterus didelphys is the uterine malformation identified by the presence of two cervical canals with separate uterine horns, due to the failure of the Müllerian ducts to fuse properly during fetal development.
Step-by-step explanation:
When a sonographic examination reveals two cervical canals with separate right and left uterine horns, the uterine malformation that is demonstrated is uterus didelphys. This condition occurs when the Müllerian ducts, which normally fuse to form a single uterine cavity during fetal development, fail to merge properly, resulting in two separate uterine cavities, each with its own cervical canal. Other uterine anomalies include bicornuate uterus, septate uterus, and subseptate uterus, but these show different structural configurations and degrees of fusion.
In the uterus didelphys, each uterine cavity connects to a separate cervix, and often, there are two vaginas as well, although sometimes only one vagina is present with a septum. This condition is one of the ways the reproductive system's development can vary, and knowing the differences is important for medical care as it may affect fertility, pregnancy, and delivery outcomes. The cervix, which is the neck of the uterus, plays a key role in reproductive health, producing mucus that aids in sperm movement and acting as a barrier during pregnancy.