Invasive carcinoma does not usually refer to spread. Invasive carcinoma is carcinoma in situ in which, under appropriate conditions, the cancer cells continue to develop, penetrate the basement membrane, and invade the lamina propria or the superficial layer under the mucosa. Spread usually refers to the metastasis of cancer cells.
Invasive growth is a form of cancer growth, which is formed after the in situ cancer cells break through the basement membrane. It is manifested as infiltrative growth with irregular tumor shape, reticular and destructive. Its definitive diagnosis requires pathologic examination to confirm the diagnosis.
Spreading is due to the special chemical composition and structure of the surface of cancer cells, which will reduce the adhesion between the cancer cells and make them loosely connected, so that they can easily detach from the original cancerous tissues and spread and metastasize to other parts of the body when the cancer cells multiply at a fast speed.
The spread of cancer cells to other organs and tissues (lymph node metastasis or distant metastasis, etc.) usually signifies the aggravation of the disease, increasing the difficulty of treatment and making the prognosis poor.
If there is any abnormality, suspicion or confirmed diagnosis of tumor, it is recommended to go to regular hospitals for comprehensive assessment of the condition, integrating multiple means to diagnose and evaluate the disease, and following the doctor’s instructions to cooperate with the treatment, so as to avoid delaying the condition.