Inflammatory pseudotumor is not a real tumor, but a kind of reactive proliferative swelling similar to tumor, which is a kind of focal proliferation due to chronic proliferative tissue proliferation formed under the stimulation of inflammation, and the proliferation can still be regulated by genes and won’t be abnormally enlarged, so it will be naturally stopped after enlarging to a certain extent. True tumors, on the other hand, proliferate abnormally and continue to grow until the tumor is necrotic or normal tissue is completely eroded. Inflammatory pseudotumors can be found in many areas, including inflammatory pseudotumors in the lungs, inflammatory pseudotumors in the eyes, and localized inflammatory pseudotumors in the skin. These inflammatory pseudotumors have a relatively small impact on the human body because they grow slowly and to a limited extent. If they form significant pressure on adjacent tissues and organs and cause symptoms, they can be surgically removed to achieve clinical eradication.