Lung nodules of 1.1 centimeters are no longer considered small, and whether they are serious or not depends on the nature of the lung nodule; benign nodules are usually not serious, and malignant nodules are more serious. Lung nodules are usually caused by chronic inflammatory stimulation, but it is not excluded that they are caused by malignant tumors. Once a patient develops a 1.1 cm lung nodule, it is recommended to go to the hospital in time for examination to find out the nature of the nodule and then take targeted treatment. If the nodule is found to be benign after imaging and pathologic examination, it is generally not a serious phenomenon, but it needs to be actively treated. If malignant nodules are found, it is necessary to take into account the nature of the pathology and the presence or absence of metastasis, etc., to make a comprehensive assessment and then make appropriate treatment plans to avoid delays in the condition. Once a patient has a lung nodule of 1.1 centimeters, it is recommended to go to the hospital for further examination and take targeted treatment under the guidance of the doctor.