1. National Cancer Institute. Cancer Stat Facts: Female Breast Cancer. SEER Cancer Statistics, 1975–2009 (Vintage 2009 Populations) and SEER 18 2006-2012. https://seer.cancer.gov/statfacts/html/breast.html
2. American Cancer Society. Breast Cancer. 2016 http://www.cancer.org/cancer/breastcancer/detailedguide/breast-cancer-key-statistics (updated 5 Jan 2017).
3. Metastatic cancer involving bladder: a review;Velcheti;Can J Urol,2007
4. Secondary neoplasms of the bladder are histological mimics of nontransitional cell primary tumours: clinicopathological and histological features of 282 cases;Bates;Histopathology,2000
5. Secondary malignant tumors of the urinary bladder metastatic from primary foci in distant organs;Ganem;J Urol,1956