Breasts are made up of four main tissue structures: fat tissue, milk ducts, glands, and connective tissue. The fat adipose tissue is subject to fluctuations in fluid volume. This can cause your breasts to swell, resulting in soreness or tenderness. Other changes in your breast tissue can also result in breast swelling. Breast swelling can cause noticeable changes. For example, your breasts might become noticeably larger.
Breast cancer is the second most common type of cancer among women in the US and it occurs when there is an uncontrollable growth of cells in the breast. Cells in nearly any body part can develop cancer and the disease may spread to other parts of the body. In the case of breast cancer, the malignant disease is characterized by tumors that start in the breast cells, while the diagnosis, treatment and prognosis depend on the different forms of the condition. The disease affects mostly women, with about , new cases diagnosed annually in the country. Every year, about 40, women die from breast cancer, but improvements in early diagnosis and treatment have increased survival. Symptoms of breast cancer include a new breast lump or mass, swelling of all or part of a breast, skin irritation or dimpling , breast or nipple pain , nipple retraction , redness, scaliness, or thickening of the nipple or breast skin, and a nipple discharge other than breast milk. Swelling in one or both breasts can be caused by numerous factors and it is not in fact a common symptom of breast cancer.
Some men might experience inflamed or puffy nipples. Several factors can lead to puffy nipples in men, including hormonal imbalances, certain exercises, and excess body fat. In most cases, making dietary and exercise-related changes will help.
Breast development happens in certain stages during a woman's life: first before birth, again at puberty, and later during the childbearing years. This starts with a thickening in the chest area called the mammary ridge or milk line. By the time a baby girl is born, nipples and the beginnings of the milk-duct system have formed. The first thing to develop are lobes, or small subdivisions of breast tissue.