Breast diseases make up a number of conditions. The most common symptoms are a breast mass, breast pain, and nipple discharge.A majority of breast diseases are noncancerous. Tumor
A breast tumor is an abnormal mass of tissue in the breast as a result of neoplasia. A breast neoplasm may be benign, as in fibroadenoma, or it may be malignant, in which case it is termed breast cancer. Either case commonly presents as a breast lump. Approximately 7% of breast lumps are fibroadenomas and 10% are breast cancer, the rest being other benign conditions or no disease.Phyllodes tumor is a fibroepithelial tumor which can either benign, borderline or malignant. Breast cancer
Breast cancer is cancer of the breast tissues, most commonly arising from the milk ducts. Worldwide, breast cancer is the leading type of cancer in women, accounting for 25% of all cases. It is most common in women over age 50. Signs of breast cancer may include a lump in the breast, a change in breast shape, dimpling of the skin, fluid coming from the nipple, a newly inverted nipple, or a red or scaly patch of skin. Diagnosis may also be made when the cancer is asymptomatic, through breast cancer screening programs, such as mammograms. Outcomes for breast cancer vary depending on the cancer type, extent of disease, and persons age. Survival rates in the developed world are high, with between 80% and 90% of those in England and the United States alive for at least 5 years.
Nasal congestion is the blockage of nasal breathing usually due to membranes lining the nose becoming swollen from inflamed blood vessels. Background
In about 85% of cases, nasal congestion leads to  mouth breathing rather than nasal breathing. According to Jason Turowski, MD of the Cleveland Clinic, "we are designed to breathe through our noses from birth—its the way humans have evolved." This is referred to as "obligate nasal breathing. "Nasal congestion can interfere with hearing and speech. Significant congestion may interfere with sleep, cause snoring, and can be associated with sleep apnea or upper airway resistance syndrome. In children, nasal congestion from enlarged adenoids has caused chronic sleep apnea with insufficient oxygen levels and hypoxia, as well as right-sided heart failure. The problem usually resolves after surgery to remove the adenoids and tonsils, however the problem often relapses later in life due to craniofacial alterations from chronic nasal congestion. Causes
Allergies, like hay fever, allergic reaction to pollen or grass
Common cold or influenza
Rhinitis medicamentosa, a condition of rebound nasal congestion brought on by extended use of topical decongestants (e.g., oxymetazoline, phenylephrine, xylometazoline, and naphazoline nasal sprays)
Sinusitis or sinus infection
Narrow or collapsing nasal valve
Pregnancy may cause women to suffer from nasal congestion due to the increased amount of blood flowing through the body. Nasal polyps
Gastroesophageal reflux disease (theorized to cause chronic rhinosinusitis- the "airway reflux paradigm")
COVID-19

Nasal obstruction
Nasal obstruction characterized by insufficient airflow through the nose can be a subjective sensation or the result of objective pathology.