title: Benign metastasizing leiomyoma of the lung: potential role of low-grade malignancy.
abstract: We report here 2 cases of multiple metastatic lung tumors after hysterectomy for leiomyoma. One patient was diagnosed as having a benign metastasizing leiomyoma (BML), while the other patient simultaneously developed a left pelvic tumor and multiple lung tumors, both of which were finally diagnosed as low-grade endometrial stromal sarcomas (ESSs). The metastatic potential of BML is not completely understood, but previously reported cases of BML may include low-grade ESS, which may play a significant role in the metastasis of benign uterine tumors.
authors.affiliation: Thoracic and Cardiovascular Surgery, Mito Saiseikai General Hospital, Mito City, Japan. statebe@yahoo.com
authors.forename: S
authors.initials: S
authors.lastname: Tatebe
authors.forename: K
authors.initials: K
authors.lastname: Oka
authors.forename: S
authors.initials: S
authors.lastname: Kuraoka
authors.forename: Y
authors.initials: Y
authors.lastname: Yatabe