The mammography clinic often encounters such patients, who come in with an anxious face and say in a panic: “Hello, Director Ren! Yesterday, there was a pain in my breast and a lump in my breast, it was hard and scared me to death”. As a mammographer, I’d be thinking, “Is that a cyst? 1, breast cyst is a what disease? Breast cysts are one of the most common disorders seen in mammography clinics, about 7 to 10% of women of childbearing age will grow cysts in the breast, 40 to 50 years old is the peak incidence, the incidence of menopause declines rapidly. Most breast cysts are anomalies in the normal development and degeneration of the breast (ANDI) – to be precise, they are anomalies in the degeneration of the normal lobules and are not considered a disease, as the normal degeneration of the epithelial tissue of the lobules depends on the persistence of the specific mesenchyme around them. If the nipple interstitial disappears too early, the epithelial glandular vesicles may form tiny cysts, or if the breast output ducts are blocked, they may develop into large cysts. 2.What causes breast cysts? What should I pay attention to in my daily diet? The specific etiological factors leading to the formation of this disorder – breast cysts – are not clear. Some indirect evidence confirms that high estrogen expression is a direct or related cause of the occurrence of the disease, such as the application of estrogenic drugs to improve menopausal symptoms in women older than 50 years old is one of the causes of cyst formation. It has been clinically found that patients with axillary odor or fox odor tend to present with multiple breast cysts. The usual diet should pay attention to reduce the intake of high-protein and high-estrogen food and drugs, such as seafood, Xueha, royal jelly, pollen, birth control pills, sheep placenta, etc. 3.What are the symptoms of breast cysts? How to make a clear diagnosis? Patients often find lumps when they touch their breasts unintentionally or with breast pain. The lumps feel smooth, movable and cystic on the surface, however, if the pressure inside the capsule is high, they will feel harder and resemble solid tumors. Some patients may notice a large cyst in the breast only when they have sudden pain due to a sudden increase in intracapsular pressure or chemical inflammation caused by extravasation of cystic fluid. Ultrasound, puncture or minimally invasive biopsy can help clarify the diagnosis. Ultrasound of the breast shows single or multiple anechoic areas in one or both mammary glands of the patient. The anechoic areas appear round or ovoid with clear borders, thin and smooth walls, good sound transmission, or sometimes separated bands of light with enhanced or no posterior echogenicity. The ultrasound image of the cyst becomes atypical when the cystic fluid extravasation causes inflammatory reaction in the surrounding tissues (ultrasonographers call it a complex cyst). Breast cysts should be distinguished from solid occupying lesions. 4.How are breast cysts treated? Most cysts are currently treated by ultrasound-guided cyst aspiration or minimally invasive spinotomy with excised tissue for pathology, and some are closely followed. If the intracapsular fluid of a breast cyst is bloody to the naked eye after aspiration, cytologic examination of the cystic fluid is required. If the fluid is not bloody, cytologic examination of the cystic fluid is chosen in conjunction with the physician’s clinical considerations or the patient’s wishes, and if the cytologic findings suggest cellular heterogeneity, suspicious malignancy or malignancy, excisional biopsy of the mass is subsequently required. If ultrasonography reveals a solid occupancy within the cyst, ultrasound-guided core minimally invasive aspiration biopsy of the solid area is required at the same time as sending the cystic fluid for cytologic examination. More women with breast cysts opt for close follow-up, which includes a clinical examination by a specialist and a breast ultrasound, plus a high-frequency mammogram in women over 35 years of age, with the aim of excluding incidental breast cancer.