Bilateral massive leiomyomas in a bicornuate uterus, with torsion of the right horn.

Uterine leiomyomas are the most common benign tumours of the female reproductive system, often asymptomatic, but can cause significant clinical issues such as abdominal pain. This case report highlights the rare occurrence of a unilateral uterine horn torsion in a bicornuate uterus caused by a massive subserosal leiomyoma. Surgical intervention with myomectomy revealed a previously undiagnosed bicornuate uterus, and the patient's recovery was uneventful. This finding shows the need for clinicians to consider leiomyoma torsion as well as uterine horn torsion in their differential diagnosis of acute abdominal pain.