Short answer · Medically reviewed summary · Last updated: 2026-04-07
Didelphys uterus, also known as uterus didelphys, is a rare congenital uterine anomaly characterized by the complete duplication of the uterus and cervix. Clinically referred to as a Müllerian duct anomaly (MDA) Class III, this condition occurs when the paired Müllerian ducts fail to fuse during embryonic development, resulting in two separate uterine bodies. What are the common synonyms and historical names for Didelphys uterus? In medical literature, Didelphys uterus is most frequently identified by a few standard terms.
Didelphys uterus, also known as uterus didelphys, is a rare congenital uterine anomaly characterized by the complete duplication of the uterus and cervix. Clinically referred to as a Müllerian duct anomaly (MDA) Class III, this condition occurs when the paired Müllerian ducts fail to fuse during embryonic development, resulting in two separate uterine bodies.
In medical literature, Didelphys uterus is most frequently identified by a few standard terms. The most common synonym used in clinical practice is "uterus didelphys." Historically, you may encounter the term "double uterus," which is a descriptive, non-technical term often used in older medical textbooks or patient-facing literature. In some European medical traditions, it has been referred to as "uterus duplex," a term that highlights the anatomical duplication of the organ. Occasionally, clinicians may use the broader classification "Müllerian duct anomaly" or "Müllerian aplasia/fusion defect" to describe the category to which Didelphys uterus belongs.
The naming of this condition varies depending on whether a source is using a descriptive anatomical approach or a standardized classification system. Major medical databases utilize the following designations:
The existence of multiple names for Didelphys uterus stems from the evolution of clinical imaging and embryological understanding. Early medical pioneers named the condition based on the visual appearance of the anatomy during surgery or autopsy, leading to terms like "double uterus." As our understanding of embryology improved, the focus shifted to the failure of the Müllerian ducts to fuse, leading to the adoption of the term "Müllerian duct anomaly." Today, medical professionals prefer Didelphys uterus or "uterus didelphys" because these terms are specific, internationally recognized in literature, and accurately describe the distinct separation of the two uterine horns and cervices.
Didelphys uterus is estimated to occur in approximately 1 in 2,000 to 1 in 28,000 women, though the true prevalence is difficult to determine because many individuals remain asymptomatic and undiagnosed. Within the DiseaseMaps.org community, 60 people with Didelphys uterus have joined to share their personal experiences, providing a valuable resource for those seeking peer support. Understanding that your condition may be referred to by different names—such as double uterus or uterine duplication—can help you navigate medical records and research more effectively.
Medical disclaimer: This information is for educational purposes only and does not constitute professional medical advice, diagnosis, or treatment; always seek the advice of your physician with any questions regarding a medical condition.