An unusual case of giant benign metastasizing leiomyoma mimicking solitary fibrous tumor of the pleura

Benign metastasizing leiomyoma is a rare entity usually manifesting with asymptomatic multiple pulmonary nodules in women with history of uterine leiomyoma. Surgical resection is the treatment of choice when feasible, alternatively hormonal therapy can be proposed. We describe a case of a 72-year-old woman with a giant and symptomatic benign metastasizing leiomyoma of the left lung, developed 22 years after hysterectomy. Complete surgical excision of the mass was performed. The patient is alive without recurrence 20 months after the operation.