Benign lung nodules around 2cm in size generally do not require surgery. If the patient has no other symptoms, medication may be chosen for clinical observation, and surgery may be required if the nodule becomes larger or other abnormalities are present. Surgery is generally not recommended for 2cm-sized lung nodules if they are clearly benign and the patient has no other symptoms. It may be due to a previous infection, existing infection, or a misshapen tumor. Medications such as anti-infective therapy may be prescribed, and regular follow-ups may be performed as prescribed. However, if a 2cm nodule grows in size during the course of medication or review or other clinical symptoms such as cough, chest pain, difficulty swallowing, etc., surgical treatment should be chosen after evaluation by a medical professional. If patients develop benign pulmonary nodules of about 2cm, they must go to the hospital for regular review and abstain from eating and drinking.