Double lung texture increased thickening left a small amount of fluid is the result of CT examination, may be lung infection, tuberculosis and other causes, and may be caused by trauma. 1. Lung infection: is due to bacteria, viruses, fungi, chlamydia, mycoplasma and other pathogens caused by inflammation of the lungs, there will be a rise in body temperature, cough, cough and other symptoms, CT examination found that the double lung texture increased thickening left side of a small amount of effusion, can be under the guidance of the doctor to take penicillin and other drugs. 2. Tuberculosis: refers to infectious diseases in the lungs, low-grade fever, night sweats, hemoptysis and other symptoms, CT examination found that both lungs have increased texture and coarsening of the left side of a small amount of effusion and other phenomena, repeated sputum examination to confirm the diagnosis, can be under the guidance of the doctor oral isoniazid, rifampicin and other medications for treatment. 3. Trauma: chest trauma leads to lung contusion, pulmonary tissue edema, pulmonary vascular permeability changes, may appear double lung texture increased left with a small amount of effusion, given symptomatic treatment, such as oxygen, prevention of infection, pain relief and other treatments. Therefore, patients with double lung texture increase thickening left side with a small amount of effusion in the examination, should go to the hospital in time to clarify the cause of the disease, and after diagnosis, symptomatic treatment is carried out under the guidance of the doctor.