A basal vacuolar sign in the lower lobe of the left lung, seen as vascular perforation is serious, and the patient is considered to have a possible malignant tumor of the lung. Pulmonary vacuolar sign is an imaging term for the finding of cavities or vacuoles in the lungs when imaging is performed, which can be seen in pulmonary tuberculosis or in malignant tumors of the lungs. Vessel penetration on imaging shows that the blood vessels in the lungs are close to the nodule, and on tomography scanning, it is found that the lung nodule is at the same level as the blood vessel tomography, at this time, you can carry out follow-up observation, and the blood vessels in the nodule undergo thickening or increase in size over time, which requires surgical treatment to determine whether the nodule is malignant or not. If there are signs of pulmonary vacuolation and vascularization, it is recommended to consult a doctor promptly, and bronchoscopy can be performed to initially evaluate the presence of malignant tumors in the lungs.