Cancer
For other uses, see Cancer (disambiguation). Cancer Synonyms Malignant tumor, malignant neoplasm A coronal CT scan showing a malignant mesothelioma Legend: → tumor ←, ✱ central pleural effusion, 1 & 3 lungs, 2 spine, 4 ribs, 5 aorta, 6 spleen, 7 & 8 kidneys, 9 liver Pronunciation / ˈ k æ n s ər / ( listen ) Specialty Oncology Symptoms Lump, abnormal bleeding, prolonged cough, unexplained weight loss, change in bowel movements [1] Risk factors Tobacco, obesity, poor diet, lack of physical activity, excessive alcohol, certain infections [2] [3] Treatment Radiation therapy, surgery, chemotherapy, and targeted therapy. [2] [4] Prognosis Average five year survival 66% (USA) [5] Frequency 90.5 million (2015) [6] Deaths 8.8 million (2015) [7] Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. [2] [8] These contrast wi...