There are many other diseases that can also cause lung occupancy, and further examination is needed to clarify the nature of the occupancy in time. An occupying lesion usually refers to an excess in the examined area in X-ray, ultrasound, CT, etc., which can compress and displace the surrounding tissues. An occupying lesion usually refers broadly to benign or malignant tumors, parasites, etc. Malignant occupying lesions mainly include cancer and sarcoma, among which cancer is common. Sarcoma is a malignant tumor derived from vascular endothelial cells, which is relatively rare, usually does not metastasize everywhere, and has a longer survival period than cancer. Benign occupying lesions can be broadly divided into two types: cystic occupying lesions and substantial occupying lesions. Cystic occupying lesions mainly include cysts and abscesses, among which cysts are more common; substantial occupying lesions mainly include hemangiomas, cellular adenomas, focal nodular hyperplasia, focal fatty liver, inflammatory pseudotumors, and verrucous hyperplasia, etc., with hemangiomas being the most common. When a patient has a pulmonary occupancy, he or she should promptly visit the respiratory department of the hospital for relevant examinations. They should also maintain an optimistic attitude and actively cooperate with the examination, and should not be pessimistic and delay treatment.