Invasive carcinoma of the breast may undergo local spread or distant metastasis, which requires further examination. Invasive carcinoma of breast is a type of breast cancer, which indicates that the cancer cells may infiltrate and grow into the surrounding normal tissues, and may break through the basement membrane tissues to spread and metastasize, in which case there may be enlargement of the surrounding lymph nodes, and other discomforts, such as low-grade fever, fatigue, and so on, may also occur. When invasive carcinoma of breast is formed in early stage, the scope of lesion may be relatively limited, and the chance of spreading will be relatively smaller, but the surrounding tissues may also have inflammatory changes such as congestion and swelling. If invasive carcinoma of breast is found, distant metastasis is also possible. It is better to seek medical treatment in time to have a better prognosis and prevent the spread of cancer cells to a certain extent.