Fill in the Blanks Fill in the blanksOnline version Fill in the blanks the following definition related to oncology by Ángeles Valadés Talavera 1 signs changes environment cancer three nausea changes prostatic loss several surgical lifestyle radiation person ovarian symptoms million provides doctor treats symptoms field Genetic are apparition are world pelvic study 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 .