Parasitic leiomyoma is an uncommon manifestation characterized by ectopic implantation in the abdominal cavity. It is most commonly thought to arise as a rare complication caused by residual fibroid fragments following surgical removal. Parasitic leiomyomas may closely mimic malignant conditions. Magnetic resonance imaging remains the best tool for differential diagnosis. We report the case of a 40-year-old nulliparous woman who presented with a history of constipation and dyspareunia. Magnetic resonance imaging revealed an enlarged heterogeneous mass that seemed unconnected with the uterus and ovaries and was then excised by laparotomy and the final histologic examination revealed parasitic leiomyoma.
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