Résumé:
Cancer is a major public health problem in the world that affects all categories of People young and old, rich and poor, men, women and children, which is a huge burden for the sick, families and societies. It is one of the leading causes of mortality in the world. The most commonly diagnosed cancers in the world are those of lung, breast and colorectal cancer. Thise types of cancers have several known causes and others where age and genetic factors are most favourable. Our work consists of a comparative and descriptive retrospective study, lasting from.. February to April 2019 This study involved 80 patients with breast cancer confirmed by a pathologist. The Study finds breast cancer affects relatively young women <40 years old: 21.25%, tumor size T2: 45%, T3: 10%, the predominant histological type is infiltrating ductal the carcinoma 72.5%, Grade SBRIII 26.25%, presence of ganglionic invasion pN +: 58.75%, RE + 23.75%, RE-76.25%, RP + 30%, RP-70%, HER2 + 46.50%, HER2- 42.50%. The Characteristics of the 40 lung tumors: patients under 50 (25.50%), T2 (37.50%), T3 (22.50%), with the predominant Histological type is the epidermoid (62.50%) . The Characteristics of colon tumors : patients under 50 years (10%), T2 (40%), T3 (20%), predominant histological type is Liberkhunien adenocarcinoma (60%). Our goal is to do a theoretical study on breast, lung and colon cancer, demonstrating the importance and aggressiveness of it's cancer. Most