Cancer is a disease caused by disordered cell multiplication throughout the body. This process generates abnormal cells that multiply, forming a tumor. Breast cancer can affect men and women. Statistically, it is classified in Brazil as the second malignant neoplasm that most affects the population. This tumor has a cure if diagnosed early. For this, today we have on the market imaging methods to prevent anomaly, such as X-Rays, magnetic resonance, ultrasound and tomosynthesis. An alternative method of diagnosis that will be discussed in this article is biosensors, a technique that does not emit ionizing radiation, causing no side effects to users. We conclude that mammography remains the gold standard for tumor detection even af...