Metastatic Leiomyoma Following Menopause: A Case Report and Review of Literature

Uterine leiomyomas commonly reduce naturally after menopause. We report a rare case of metastasizing leiomyoma that grew after surgical menopause. A 68-year-old woman suffered from pelvic and lung masses without clinical symptoms. Nineteen years ago, she underwent a total hysterectomy and bilateral adnexectomy for multiple uterine myomas and bilateral endometriotic cysts. She has since been regularly prescribed conjugated estrogens. Surgery was scheduled in order to rule out malignancy; abdominal masses resection and thoracoscopic left partial pulmonary resection (S3, S4, S10) were performed. The histological diagnosis was leiomyoma in both abdominal and lung masses, and there was no evidence of gene mutations, which suggested that leiomyosarcoma was indicated. This case may indicate that hormone replacement was augmented via derived nutrient vessels after a surgical ovarian absence.