A lung nodule of 1.98 may be 1.98cm or 1.98mm and can be treated by annual follow-up as well as surgery. 1.1.98mm: If the patient’s lung nodule is 1.98mm, it is usually a benign nodule, usually with no special discomfort, and usually does not require any special treatment, but regular follow-up is needed to avoid deterioration of the condition and delay of the best treatment time. 2.1.98cm: If the patient’s lung nodule is 1.98cm, there is a higher chance of malignancy and further evaluation is needed, with biopsy or surgical resection if necessary. For patients with lung nodules, it is recommended to go to a specialized hospital to clarify the cause of the disease and then further treatment under the guidance of the doctor.