Breast examination: mainly through visual and palpation to check the shape of the breast, the condition of the skin surface of the breast, the condition of the nipple areola, breast lumps, nipple overflow, etc. Finally, do not forget the regional lymph node examination and whole body examination. 1.Breast morphology: we need to check whether the appearance, size and position of the breast are symmetrical. 2.Breast skin surface: The color of the breast skin and the presence of edema, rash, ulceration, superficial venous anger, skin folds and orange peel-like changes should be checked. 3, nipple areola: the nipple should be checked for deformity, elevation, retraction, depression, erosion and desquamation; the areola should be checked for abnormal color, eczema-like changes, etc. 4. Breast lumps: The location, shape, size, number, texture, surface smoothness, mobility and tenderness of breast lumps should be checked. The main way to check is by palpation. Generally speaking, bilateral multiple lumps with periodic breast pain are more likely to be benign; while unilateral single painless lumps have the possibility of malignant lesions. 5. Nipple overflow: check whether there is nipple overflow, and check in detail whether it is spontaneous or extruded, unilateral or bilateral, and the nature of the overflow, etc. Regional lymph nodes and general condition: Since breast cancer is prone to axillary and supraclavicular lymph node metastasis, physical examination of breast should routinely check the size, texture and activity of lymph nodes in these areas. How to do the examination: The upper half of the body is completely naked, stand upright in front of the mirror, raise and lower both hands to observe the bilateral breasts, whether they are symmetrical, whether there is any change in size, whether there is any change in swelling, whether there is any change in skin color, whether there is any ulceration, and whether both breasts are on the same level. When examining fingers together, touch the breasts with finger abdomen and choose different strengths of light, medium and heavy for palpation, remember not to pinch and grasp the breasts with your hands, generally check the right breast with the left hand and the left breast with the right hand, and carry out axillary lymph node examination also with the hand on the flat angle of the hand, do not mention and grasp the axillary tissue or axillary skin, and if abnormalities are found, you should consult a doctor in time. Specific steps are as follows: 1, the correct breast examination touch the palm of the hand should be flat four fingers together, with the most sensitive index finger, middle finger, ring finger end finger belly in order to lightly search the breast outside the upper outer lower, inner lower, inner upper region and finally the middle of the breast nipple and areola area. Do not use your fingers to grasp and pinch the breast tissue during the examination, otherwise the grasped breast tissue may be mistaken for a lump. 2.From sitting position any nipple inversion skin depression structure shape abnormality is a clue of deep breast cancer. If the patient claps her hands on her head to contract the pectoral muscles, the above signs will appear, and when the woman is in sitting position, it is easy to check the lymph nodes above and below the clavicle and in the axilla. Finally, palpation should be performed in a sitting position by touching the area under the nipple with joined fingers. 3. In the supine position, a more extensive palpation of the area is performed. A pillow is placed under the ipsilateral breast and the ipsilateral hand is raised above the head so that the breast is evenly spread on the chest wall, making it easy for the fingers to reach the deeper part. The palm surface of the middle finger of the index finger, not the fingertip, should be used for palpation, and palpation should be performed by turning the nipple outward in a circle, and it is especially important to examine the breast that extends to the axilla. 4, breast examination should first observe the development of the breast. Whether the two sides of the breast is symmetrical size, whether similar to both sides of the nipple is, whether the nipple at the same level, whether there is retraction depression; nipple areola whether there is erosion, how the skin color of the breast, whether there is edema and orange peel-like changes whether there is redness and swelling and other inflammatory, performance of the superficial veins in the breast area whether angry, etc.