A partially solid nodule in the upper lobe of the left lung, with a vascular shadow seen penetrating it, measuring about 1.0 x 0.6 cm, is more serious. Lung nodules can be categorized into solid nodules, partially solid nodules, and ground-glass nodules, among which, partially solid nodules belong to a kind of nodules with the highest degree of malignancy and are most prone to early cancer. The severity of nodules in the upper lobe of the left lung is also related to the size of the nodules. Nodules smaller than 6 mm are mostly benign, nodules between 6 and 8 mm are mostly neutrophilic, and nodules larger than 8 mm with invasive growth are mostly malignant. In conclusion, the presence of some solid nodules, need to further improve the relevant examination such as chest enhancement CT, tumor markers, etc., if necessary, improve the percutaneous puncture biopsy or bronchoscopy, to further clarify the nature of the nodules, and comply with the doctor’s instructions for treatment.