Interstitial lymphoid follicle formation suggests an inflammatory response. 1. Many lymphatic systems in the human body will form lymphoid follicles after being stimulated by inflammation, and their function is mainly to form collective immunity and defense. 2. Lymphoid follicles may form when inflammation is stimulated or when there is inflammation in the neighboring organs, which may result in lymphoid follicle formation through the lymphatic circulation, so when the lungs are stimulated by inflammation, lymphoid follicles are likely to form. 3. If the formation of lymphoid follicles is asymptomatic, it may be a kind of defensive reaction, which can be left untreated for the time being, and you can just pay attention to rest, eat a light diet, and undergo regular checkups; if you have symptoms such as coughing and coughing up sputum, you can go to the hospital in time for diagnosis and targeted treatment.