Prof. Hasan Karanlik is a surgical oncologist specializing in the treatment of breast cancer. He graduated from Istanbul Faculty of Medicine Istanbul University and completed his general surgery residency at the same institution. Prof. Karanlik then completed a Surgical Oncology fellowship and master degree for Cancer Epidemiology and Biostatistics at the Institute of Oncology Istanbul University. He focused his career exclusively on the treatment of breast cancer since 2004. He is an active member of the Turkish Surgical Society, Breast Society of Istanbul, and Society of Surgical Oncology. He is a member of the board director of the Breast Society of Istanbul and Society of Surgical Oncology. He has more than 100 national and international original articles, more than 200 presented abstracts, awards for young researcher, and 8 best study awards in congresses. Prof. Karanlik completed all requirements of European Union of Medical Specialists, passed all exams of European Board of Surgery in Liverpool and received degree of Fellowship European Board of Surgery (FEBS) in 2014. He visited many institutions as an observer and researcher such as European Institute of Oncology in Milan, Italy, Camargo Hospital Do Cancer in Sao Paulo, Brazil, Memorial Sloan Kettering Cancer Center in Newyork, USA, MD Anderson Cancer Center in Houston, USA, Netherland Cancer Institute in Amsterdam, Netherland, and European Academy of Senology in Dusseldorf, Germany between 2009 and 2013. He is also the member of the Oncoplastic Breast Consortium (OPBC) in Basel, Switzerland. Prof. Karanlik is the director of Surgical Oncology Unit of Istanbul University, Institute of Oncology which is a member of Breast Centers Network and also works as an attending surgeon and clinical researcher at VKV Istanbul American Hospital which is affiliated with MD Anderson Cancer Center.