What is invasive breast cancer

We have learned a lot about breast cancer, but it is just the tip of the iceberg. We have not discussed more in-depth issues, such as what is invasive breast cancer. Today we will discuss what invasive breast cancer is. Invasive breast cancer is a branch of breast cancer. According to the degree of invasiveness, breast cancer can be divided into invasive breast cancer and non-invasive breast cancer. Invasive breast cancer is much more dangerous than non-invasive breast cancer.

Invasive breast cancer refers to a malignant tumor in which cancer cells have penetrated the basement membrane of the mammary ducts or lobular alveoli and invaded the stroma. The vast majority of invasive breast cancers are adenocarcinomas, which originate from the mammary epithelial cells, especially the terminal ductal lobular units. Invasive breast cancer has many morphological phenotypes and is clearly divided into different histopathological types based on their unique prognostic or clinical characteristics. Some studies have shown that tumors with a higher histologic grade respond better to certain chemotherapy regimens than tumors with a lower histologic grade. Invasion of peripheral nerves by cancer is sometimes found in invasive breast cancer, but it is not an independent prognostic factor.

Invasive breast cancer can be divided into the following types:

1. Apocrine carcinoma: The cancer cells have rich eosinophilic cytoplasm, sometimes with apocrine processes, and the nuclei are mildly to moderately atypical, forming glandular ducts, alveoli or small papillary structures.

2. Mucinous adenocarcinoma: It occurs on the basis of mucinous gland metaplasia of the breast duct epithelium and is more common in women near or after menopause, especially in women over 60 years old. In the carcinoma essence, epithelial mucus components account for more than half. Most of the mucus is outside the cells, forming mucus lakes; occasionally it is inside the cells, appearing as signet ring cells.

3. Squamous cell carcinoma: originates from the mammary duct epithelium with squamous metaplasia. The cancers were all typical squamous cell carcinomas, with visible intercellular bridges and keratinization. If other types of cancer undergo partial squamous metaplasia, they are not included in this list.

4. Papillary carcinoma: It occurs in the epithelial cells of large milk ducts. The cancerous nature is mainly papillary structure with or without fibrous vascular bundles. It can be non-invasive or invasive papillary carcinoma. Its infiltration often appears at the base of papillary hyperplasia.

Nowadays, breast cancer is becoming more and more common in younger people. In recent years, the number of patients suffering from breast cancer and those in the latent stage of breast cancer has been increasing rapidly. Professional doctors recommend that you check yourself regularly. If you find abnormal swelling of your breasts, you should go to a regular large hospital for examination and treatment immediately. You should also go to the hospital for regular gynecological examinations every year to determine whether your body is healthy and reduce the risk of breast cancer.