Herlyn-Werner-Wunderlich syndrome: a rare cause of acute urinary retention in an adolescent girl.

To cite: Kumar S, Rajagopal KV, Karegowda LH, et al. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/bcr-2015209638 DESCRIPTION A 14-year-old girl presented to emergency triage with acute retention of urine. There was history of cyclic pelvic pain for the past 6 months, for which she had been prescribed non-steroidal antiinflammatory drugs by a private practitioner. There was no history of ureteric colic or burning during micturition. Gynaecological history indicated menarche at 12 years followed by regular menses. There was no history of abnormal vaginal bleeding. Ultrasound of the abdomen revealed findings suggestive of bicornuate uterus with haematocolpos. Subsequently, MRI was requisitioned, revealing two widely divergent, symmetrical uterine corpii, partially fused at the cervix without any communication between their endometrial cavities (figure 1A). There was a thick hypointense left hemivaginal septum with a large ipsilateral haematocolpos appearing hyperintense on T1-weighted and hypointense on T2-weighted images, findings consistent with intracellular methaemoglobin stage of bleed. A similar intensity dilated tortuous