What is invasive breast cancer?

Written by Fan Hong Qiao

Breast Health Department

Updated on September 23, 2024

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Invasive breast cancer is the most common tumor in women, accounting for 22% of all malignant tumors in females. Invasive breast cancer refers to a malignant tumor where cancer cells have broken through the basement membrane of the breast ducts or lobular alveoli and invaded the interstitium. The vast majority of invasive breast cancers are adenocarcinomas, originating from the epithelial cells of the breast parenchyma, especially from the terminal duct lobular units. Its characteristics include the tumor's infiltration into adjacent tissues and a marked tendency for distant metastasis.

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Written by Fan Hong Qiao

Breast Health Department

1min 10sec

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Does breast cancer have a genetic component?

Breast cancer is somewhat related to genetics and has a certain familial predisposition. It manifests as a higher incidence rate in relatives with breast cancer, especially in closer blood relations, and daughters may develop the disease at an earlier age than their mothers. There is also a higher risk of bilateral occurrence and a tendency for other malignant tumors to develop in different parts of the body. Additionally, if a family has at least two sisters with breast cancer and their mother is not afflicted by the disease, the susceptibility of this family is about three times higher than average, commonly occurring after menopause, and usually affecting one side. Of course, the influence of human genetic factors on the development of breast cancer is multifaceted. The occurrence of breast cancer is affected not only by genetic factors but also by many other factors, which have a cumulative effect of risks. It is recommended that individuals from families with a history of breast cancer should undergo regular screening, improve their lifestyle, and avoid the accumulation of risk factors, which can also enable earlier detection and treatment of breast cancer that has already developed.

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Written by Zhang Chao Jie

Breast Surgery

1min 22sec

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Breast cancer symptoms

The symptoms of breast cancer depend on the severity of the cancer and whether there are any signs of metastasis or recurrence. It is important to emphasize that over 90% of breast cancer cases do not involve pain as a symptom. This means that the earliest symptoms of breast cancer are usually determined by whether the cancer is in its early or late stages. Early-stage breast cancer may have no symptoms at all, or there may be signs such as a lump or hard nodule in the breast, discharge from the nipple, especially coffee-colored or bloody discharge. Late-stage symptoms can include changes in the skin of the breast resembling the texture of an orange peel, palpable large lymph nodes in the armpit that are hard but neither painful nor itchy. If the cancer has metastasized to the lungs, chest cavity, pleura, liver, bones, or head, symptoms might include chest pain, coughing, difficulty breathing, abdominal distention, bone pain or fractures, as well as headaches, eye pressure, and dizziness, among others. Therefore, the symptoms of breast disease depend on whether the cancer is in its early stages; if it is in a late stage and has metastasized to other parts, corresponding symptoms will be present. It is also important to remember that early-stage breast cancer may not show any symptoms at all.

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Written by Lin Yang

Breast Surgery

36sec

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early symptoms of breast cancer

Breast cancer, in the majority of cases, manifests as a painless lump, often accidentally discovered by the patient without any adverse discomfort. During self-examinations or routine screenings, a few patients might detect them. These lumps are commonly found in the upper outer quadrant, typically appearing as a single lesion on one side, with no obvious abnormalities on the skin. Dimpling, an orange-peel-like texture, the appearance of satellite nodules in later stages, nipple retraction, bloody discharge, and eczema-like changes can be observed. There is also swelling of regional lymph nodes.

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Written by Lin Yang

Breast Surgery

41sec

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What are the symptoms of breast cancer?

Breast cancer is most commonly found (60% of cases) on the outer boundary of the breast. Its symptoms often include a single, painless, small lump that is hard, with an uneven surface and an irregular shape. The boundaries of the lump are not clearly distinguishable from the surrounding tissue, and it cannot be easily moved within the breast. The skin over the lump may show signs of redness, swelling, dimpling or orange-peel-like changes. Additional symptoms might include dimpling, ulceration, and other abnormalities. The lump may be associated with changes in the same side nipple, such as bloody discharge, and enlarged lymph nodes can sometimes be felt under the armpit.

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Written by Zhang Chao Jie

Breast Surgery

1min 1sec

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Breast cancer surgery accompaniment for a few days

The duration of postoperative care for breast cancer surgery depends on the extent of the surgery. This includes modified radical mastectomy, classic radical mastectomy, and surgeries that preserve both the breast and the axilla. For surgeries that preserve the breast and axilla, patients typically recover quickly, and generally, providing care for three to five days is more than sufficient. However, to ensure patients feel comforted and cared for, it's common to provide care starting the day before surgery until the patient is discharged. Postoperative care tends to be longer for modified radical mastectomies that include axillary clearance, as care is needed until the patient can fully manage the arm on the operated side on their own. Therefore, the care duration varies depending on the individual and their recovery. Thus, the shortest duration of care is usually for surgeries that preserve both the breast and axilla, typically sufficient within three to five days.