Lung nodule 2.4cm*2.2cm is more serious. The main reason why it is serious is because the lung nodule is larger than 2cm, if it is malignant, the nodule is not small, but it does not exclude the possibility of benign tumors. Malignant tumors lung nodules are generally isolated, CT imaging is more irregular shape and more foliated edge, you can see more uniform or uneven density of the burrs, calcification is rare, generally pulling the adjacent pleura to form pleural depression sign. Clinical manifestations are closely related to the presence or absence of complications or metastasis. Common symptoms include cough, hemoptysis, chest tightness and shortness of breath, weight loss, etc., occasionally accompanied by fever. When nodules are found in the lungs by chest X-ray or CT, it is necessary to consult a doctor in time, who will further analyze the nature and cause of the nodules based on the size and morphological changes of the nodules, as well as the accompanying symptoms and signs, and give appropriate treatment plans.