Intraductal cancer (lat. intra- inside + ductus duct) is a malignant neoplasm that develops from epithelial cells of the ducts of the gonad system. Intraductal carcinomas are found predominantly in female mammary glands and are associated with benign dysplasias. In half of the cases, intravenous cancer is detected at a young age. In this regard, the onset of the disease may be accompanied by pregnancy. Intraductal cancer most often occurs in women aged 50-60 years. The female population living in disadvantaged areas with high levels of environmental pollution with toxic emissions is predisposed to the disease. More than half of the cases of cancer of this form are cases of cancer in situ. This form of cancer is most common in breast nodules. The absence of pronounced symptoms in intraductal cancer is the reason for late detection. The first symptoms of the disorder may appear during pregnancy. They include pain in the mammary glands before or after menstruation, increased sensitivity of the nipples, and abnormal discharge. In the later stages of the disease, prolonged and constant pain or painful sensations during palpation appear. If there are lumps, you should consult a doctor for examination and diagnosis.