Oncologist are specialized with the diagnosis and treatment of cancer. Cancer refers to the uncontrolled growth of impaired cells in the human body, creating masses of cells in the body like liver cancer, blood cancer, lung cancer etc. There are three kinds of oncologists which includes gynecologic oncologist, pediatric oncologist and hematologist oncologist They not just explain diagnosis and stage of a patient but also discuss all possible treatment options by delivering high quality, compassionate care and helping patients in managing cancer related pain and other symptoms or treatment side effects.