[Unicornuate uterus with cavitary non-communicating rudimentary horn: magnetic resonance characterization].

Mullerian duct or paramesonephric anomalies are a group of congenital malformations of the female genital tract that result from the alteration in one or more stages of embryonic development. The prevalence has increased, probably due to the progress of diagnostic imaging methods and the relevance that it has acquired in young women with infertility problems. Magnetic resonance imaging (MRI) is currently the method of choice for characterizing the different types of Mullerian anomalies, its complications and associated pathology. Unicornuate uterus correspond to class II of classification of Mullerian duct anomalies developed by the American Society for Reproductive Medicine. According to this, four subtypes have been identified, each with different clinical implications. A cavitated, non-communicating rudimentary horn in a unicornuate uterus is associated with an increased incidence of gynecological problems and obstetric complications that sometimes threaten the lives of patients, reason why its suspicion, diagnosis and treatment is necessary. We report the case of a patient with infertility in which this subtype of congenital malformation was discovered.