The differences between microinfiltration and infiltration are as follows: 1. Microinfiltration refers to the initial stage of invasive growth and development of tumor, while infiltration refers to the further development of the disease belonging to microinfiltration. 2. Microinfiltration will appear as one or more, clearly separated small infiltrative foci, and microinfiltration is usually less than 0.1 cm, while the area of infiltration will be much larger than the area of microinfiltration, that is. The extent of the infiltrating interstitium has greatly exceeded the area of the microinfiltrate, and will generally present a reticular or encapsulated interstitial infiltrate. So once you do the examination and find that you already have the symptoms of microinfiltration, you should promptly carry out treatment to avoid prolonged delay, making the patient’s condition aggravated to the degree of infiltration, which is not very good treatment.