The common ones are pneumonia, tuberculosis, and lung cancer. Either way, lung cavities do not heal on their own. The most common image of pneumonia forming a cavity in the lung is Staphylococcus aureus infection, which is a serious infection in pneumonia. Staphylococcus aureus infections require anti-inflammatory treatment with vancomycin. It is possible for a cavity to heal after anti-inflammatory treatment, but it will not heal on its own without treatment. Tuberculosis can also form a cavity image, and cavitary tuberculosis is also a serious form of tuberculosis, and in general, cavity-forming tuberculosis is infectious and requires anti-tuberculosis treatment. Even if anti-tuberculosis treatment is effective, the cavity may not heal completely. Anti-tuberculosis treatment can make the cavity smaller or become a purified cavity. Lung cancer can form cancerous cavities. Lung cancer has a poor prognosis, and the possibility of healing after forming a cavity is even less. Once a pulmonary cavity is formed, it is a serious disease no matter which disease it is in, and even with regular treatment, the likelihood of healing is not very high, let alone healing on its own. When a pulmonary cavity is found, it must be treated as soon as possible to avoid aggravation of the condition.