We report a rare case of uterine didelphia with left hematocolpos and ipsilateral renal agenesis.
A 12-year-old girl, was admitted to our hospital because of intermittent abdominal pain. Menarche occurred 4 months prior to the patient's admission. Rectoabdominal examination revealed a suspicious torsion. An ovarian tumor or retrovesical tumor was suspected by ultrasonography and X-ray CT scan.
Laparotomy revealed an enlarged bicornuate boggy uterus, normal ovaries and a retrovesical tumor. The cervix was displaced to the right side due to a soft mass, which was considered to be an obstructed uterine horn with hematocolpos. By the vaginal approach, the mass was incised and drained, yielding about 600ml of chocolate material.
An intravenous pyelogram revealed the absence of the left kidney. Gynecologically, uterine didelphia is not rare, however the combination of uterus didelphia with unilateral hematocolpos due to imperforate vagina is very rare.
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