Invasive cancer is invasive cancer, that is, cancer cells break through the epithelial basement membrane structure, with infiltrative and invasive properties, which is a malignant manifestation.
Compared with carcinoma in situ, invasive carcinoma has a higher degree of malignancy and active cancer cells. Invasive carcinoma is the further development of carcinoma in situ, which breaks through the structure of basement membrane, and is able to invade the surrounding normal tissues, destroying the normal structure, and can also infiltrate into the deeper layers, with a poorer prognosis.
Invasive cancer is more invasive and may invade blood vessels to the periphery and cause blood vessel thrombosis, or invade muscle layers or nerves to cause pain, or invade periosteum to cause bone pain.
Although it is a localized infiltration, cancer is a systemic disease and requires comprehensive treatment.