Pneumatoid pseudotumor is a benign tumor of the lungs, a granulomatous mechanization produced by chronic inflammation of the lungs, a nonspecific benign proliferation of the lung parenchyma, and a rare respiratory disease. The pathogenesis of pneumatoid pseudotumor is unclear, and it is currently thought to be associated with bacterial or viral infections. Pneumatoid pseudotumor has no specific clinical manifestations, which can be manifested as cough, fever, chest pain, etc., and it is found in some patients during physical examination and chest CT. Pneumatoid pseudotumor is characterized by clear margins, smooth, spherical or spherical lesions, and uniform density on CT. Clinically, it needs to be differentiated from tuberculosis, aspergillus and lung cancer, and the main treatment is surgical resection. Warm reminder: If the imaging report suggests pneumonic pseudotumor, you should go to the hospital in time, and ask the doctor to clarify the diagnosis and treatment.