title: [Metastasizing Leiomyoma of the Lung Detected on Chest X-ray after Surgery for Breast Cancer；Report of a Case].
abstract: A 60-year-old postmenopausal woman presented with a lung nodule, which was detected on a chest X-ray 2 years after surgery for breast cancer. Pulmonary metastasis from the breast cancer was suspected and surgical resection was performed. On histopathological examination, the lung nodule showed a smooth muscle cell tumor, and immunohistochemical staining was positive for estrogen and progesterone receptors. As a mass in the uterine was detected by computed tomography images before surgical resection, benign metastasizing leiomyoma of the lung was suspected. Subsequently, the patient underwent hysterectomy and bilateral salpingo-oophorectomy. The pathological findings revealed that the mass in the uterine was atypical leiomyoma, which was consistent with the primary lesion of the lung metastasis. Atypical leiomyoma is classified as a benign tumor, but in this case, careful follow-up is required because of its clinical course and histological features.
authors.affiliation: Department of Thoracic Surgery, Osaka National Hospital, Osaka, Japan.
authors.forename: Hiroki
authors.initials: H
authors.lastname: Kiyokawa
authors.forename: Hideyasu
authors.initials: H
authors.lastname: Omiya
authors.forename: Koji
authors.initials: K
authors.lastname: Takami
authors.forename: Mitsugu
authors.initials: M
authors.lastname: Sekimoto
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Mori
mesh_terms: D001943:Breast Neoplasms / Q000473:pathology* / Q000601:surgery*; D005260:Female; D006801:Humans; D007889:Leiomyoma / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery*; D008175:Lung Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary*; D008875:Middle Aged; D011859:Radiography; D014594:Uterine Neoplasms / Q000556:secondary