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Granuloma Annulare
Joseph Junewick, MD FACR
over 10 years ago
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Bicornuate Uterus

Case Detail

Anatomy: Genitourinary
Joseph Junewick, MD FACR
Diagnostic Category: Developmental or Congenital
Created: over 7 years ago
Updated: over 4 years ago
Tags: PEDS
Modality/Study Types: MR
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Teenager with hypermenorrhea and abnormal ultrasound.

Case Images


Bicornuate Uterus


MR – Axial T2 images show two separate uterine horns (deep septal cleft) converging to form one cervix.


Diagnosis of mullein duct anomalies is clinically important because of the high associated risk of infertility, endometriosis, and miscarriage. Mullein anomalies are also commonly associated with renal anomalies (renal agenesis, ectopia, hypoplasia, fusion, malrotation, and duplication), segmentation anomalies of the spine and dysrhaphism, cardiac anomalies, and syndromes (e.g., Klippel-Feil syndrome). Bicornuate uterus results from incomplete fusion of the müllerian ducts. Bicornuate uterus is characterized by the presence of a cleft (>1 cm in depth at MR imaging) in the external contour of the uterine fundus. The cervix may or may not be duplicated (bicornuate unicollis or bicollis). MR and US imaging should be used to identify the presence of a deep fundal cleft. At US, divergent uterine horns and separation of uterine cavities may be optimally seen in the secretory phase of the menstrual cycle due to echogenicity of the endometrium. At MR imaging, both uterine horns have normal zonal anatomy.


Behr SC, Courtier JL, and Qayyum A. Imaging of Müllerian Duct Anomalies. RadioGraphics (2012); 32:E233–E250.

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