Completar frases Fill in the blanksVersión en línea Fill in the blanks the following definition related to oncology por Ángeles Valadés Talavera 1 study person three field pelvic changes Genetic prostatic symptoms surgical treats symptoms radiation loss changes cancer world are million are doctor ovarian several nausea provides signs lifestyle environment apparition Oncology is the of cancer . An oncologist is a who cancer and medical care for a diagnosed with cancer . The of oncology has major areas : medical , , and . There are types of cancer : , , gastrointestinal , lung , and blood cancer . defects , , and habits are highly connected to the of cancer . Every day around 2 people diagnosed with in the . Some of the of cancer : stomach pain or , unexplained weight , skin , chronic headache , breast , bloating , and abnormal periods or pain amongst other .