Thorac Cardiovasc Surg 2009; 57(3): 180-183
DOI: 10.1055/s-2008-1038637
Case Reports

© Georg Thieme Verlag KG Stuttgart · New York

Benign Metastasizing Leiomyoma of the Lung: Potential Role of Low-Grade Malignancy

S. Tatebe1 , 2 , K. Oka3 , S. Kuraoka1 , Y. Yatabe4
  • 1Thoracic and Cardiovascular Surgery, Mito Saiseikai General Hospital, Mito City, Japan
  • 2Thoracic and Cardiovascular Surgery, Niigata University Graduate School of Medicine and Dentistry, Niigata City, Japan
  • 3Pathology, Mito Saiseikai General Hospital, Mito City, Japan
  • 4Pathology and Molecular Diagnostics, Aichi Cancer Center Hospital, Nagoya City, Japan
Further Information

Publication History

received November 6, 2007

Publication Date:
27 March 2009 (online)


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.


Dr. MD, Ph.D Shoh Tatebe

Thoracic and Cardiovascular Surgery
Mito Saiseikai General Hospital

Futabadai 3–3–10

311–4198 Mito City