BACKGORUND:

Parasitic leiomyomas are a rare entity, defined as an unusual variant of uterine myomatosis. Have been documented in the abdominal wall, small intestine, cervical or vaginal stump, iliac vessels, ovaries, sigmoid colon, and greater omentum.

OBJECTIVE:

To report a clinical case of retroperitoneal parasitic leiomyoma and review the literature.

CLINICAL CASE:

A 57-year-old patient with a diagnosis of CIN-III and secondary abnormal uterine bleeding, who consulted for a sensation of abdominal mass and pain, subjective weight loss, hyporexia, dysphagia and gastric fullness, of four months of evolution. Extension studies document a large retroperitoneal mass and elevation of tumor markers Ca 125 and Ca 19-9. We practice surgical management of her gynecological pathology and resection of the mass by laparotomy, with histopathological finding of myoma.

CONCLUSION:

Parasitic leiomyomas should be suspected in patients with a detected mass and a history of hysterectomy or myomectomy, especially in the context of morcellation. The treatment of this condition is surgical and, in cases of disseminated peritoneal leiomyomatosis, pharmacological treatments have been used with aromatase inhibitors and gonadotropin-release hormone analogues.