1. Cecil RL, Goldman L, Schafer AI. Goldman's Cecil Medicine. Philadelphia, USA: Elsevier/Saunders; 2012.
2. Niederhuber JE, Armitage JO, Doroshow JH, et al. Abeloff's Clinical Oncology. 5th ed. Philadelphia, USA: Elsevier/Saunders; 2014.
3. Metastatic patterns of invasive lobular versus invasive ductal carcinoma of the breast.;Borst;Surgery,1993
4. Secondary tumors of the gastrointestinal tract: Surgical pathologic findings and comparison with autopsy survey.;Washington;Mod Pathol,1995
5. Metastatic tumors to the colon and rectum: a multi-institutional study;Mourra;Arch Pathol Lab Med,2012