What Is the Anatomy of the Breast?

Anatomical name. Human and mammal-specific lactating organs. Humans are located in the fourth intercostal space of the midline of the clavicle, one on the left and one on the left. Normal children and men are not obvious. Women grow up during adolescence due to the stimulation of sex hormones. The breast of an adult woman is hemispherical, the nipples are cylindrical, the skin in the central part is pale red, and there are sebaceous glands called areola. Inside the breast are mainly 15 to 20 glandular (mammary) lobules and adipose tissue. The glands are arranged in a radial pattern, with the milk ducts facing the areola and opening in the nipples. Pregnant and lactating glands develop most vigorously, with enlarged breasts, protruding or sagging forward; enlarged areolas, deeper colors, and venous dilatation on the breast skin surface. After menopause, the ovaries cease to function, and mammary gland volume and fat are degraded and replaced with fibrous tissue.

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Anatomical name. Renhe

Affected by factors such as region and race, the time when women's breasts begin to develop varies. The majority of women's breasts begin to develop between 8-13 years of age, and fully mature between 14-18 years of age. Most breast development starts from the left side, and it takes about 3-5 years from the beginning to full maturity.

The first stage (1 to 9 years): before puberty, the breasts have not yet developed.

The second stage (10-11 years old): In the early stage of breast development, the breast germ under the nipple begins to grow, showing a pronounced dome-shaped uplift.

The third stage (12 ~ 13 years old): The breasts are rounded and shaped like adults, but they are still small.

Phase 4 (14 ~ 15 years old): The breasts increase rapidly,

(A) more breasts, more

(1) Acute mastitis:

Red, swollen, hot, and painful breasts are often confined to one location on one side of the breast. Palpation has a hard mass, accompanied by systemic poisoning symptoms such as chills, fever, and sweating. It often occurs in lactating women, but is also seen in young women and men.

(B) breast tumors:

It should be distinguished from benign or malignant. Breast cancer generally has no inflammation, and it is mostly single and adheres to the subcutaneous tissue. The local skin is orange peel-like, and the nipple is often retracted. It is more common in women over middle age, and each stage is accompanied by axillary lymph node metastasis. Benign tumors are softer, with clear boundaries and a certain degree of activity. Common cases include breast cystic hyperplasia and breast fibroids.

(Three) male breast hyperplasia:

Male breast hyperplasia is common in endocrine disorders, such as the use of estrogen, hyperadrenocortical function, and liver cirrhosis.

(Four) breast stones

Some lactating women will feel a round or flat lump on their breasts, generally about 1 to 3 cm in size, with a smooth surface and well-defined boundaries, which can move and not stick to the surface skin.