Metastatic Lobular Breast Carcinoma Infiltrating a Uterine Leiomyoma

Abstract Metastatic breast cancer is rarely identified in a uterine leiomyoma. Herein is reported the case of a 53-year-old patient with untreated left-sided breast cancer who later manifested abdominal symptoms and metrorrhagia. After hysterectomy, pathologic analysis revealed metastatic lobular breast carcinoma involving the uterine fundus and a leiomyoma.