Chest wall infiltration: Chest wall tumors generally refer to tumors of the deep soft and skeletal tissues of the chest wall. Chest wall tumors can be divided into two categories: primary and secondary. Secondary chest wall tumors are mostly caused by the metastasis of malignant tumors from other parts of the body to chest wall tissues, or direct infiltration of malignant tumors of lung or pleura adjacent to the chest wall. Primary chest wall tumors are rare, accounting for about 5-10% of the primary tumors in the whole body. 80% of them occur in the ribs, most of them are benign, and about 20% occur in the sternum, while tumors in the sternum are more malignant. Most of them are benign, about 20% occur in the sternum and malignant tumors in the sternum. What are the symptoms that are easily confused with them? Imaging examination can distinguish chest wall tumor from lung tumor, and MRI can be used to distinguish soft tissue tumor from vascular lesion. Chest wall tumor Chest wall tumor refers to the tumor occurring in deep thoracic tissue, including tumor of bone, periosteum, muscle, blood vessel, nerve and other tissues, but not including skin, subcutaneous tissue and breast tumor. Chest wall tumors are divided into two categories: primary and secondary, and primary tumors are divided into benign and malignant. Primary benign tumors include lipoma, fibroma, neurofibroma, nerve sheath tumor, osteofibrous dysplasia, osteofibroma, chondrosarcoma, osteochondroma and bone cyst, etc. Primary malignant tumors include fibrosarcoma, neurofibrosarcoma, angiosarcoma, rhabdomyosarcoma, chondrosarcoma, osteosarcoma, osteochondrosarcoma and malignant giant cell tumor of bone. Secondary chest wall tumors are almost always metastasized from malignant tumors in other parts of the body, often causing local destruction or pathological fracture of ribs and causing pain, but the local masses are not obvious, mainly metastatic cancer. 2.Lung tumors (tumorsoflung) are divided into benign tumors and malignant tumors (see lung cancer). Benign tumors of the lung include true tumors of the bronchi and lungs, adenomas, smooth muscle tumors, lipomas, fibromas, etc. They are a rare group of diseases. It is an extremely rare group of diseases. The cell differentiation and morphology of benign tumors of bronchus and lung are similar to normal cells, and most of the masses have envelope and are clearly demarcated from surrounding tissues, with smooth and neat edges, round or oval in shape, and are mostly solid lesions. The distribution is more on the right side than on the left side, and the tissue is well differentiated. However, some benign tumors have the possibility of malignant transformation. Soft tissue tumors have many kinds and mixed names, especially the pathomorphology of soft tissue malignant tumors. With the continuous improvement of their understanding, the pathological naming is often changed, which makes clinical workers feel much more difficult than other malignant tumors in the process of treatment. Recently, there are new changes about the pathological classification of soft tissue tumors, renaming some tumors, such as synovial sarcoma to malignant tendon sheath giant cell tumor, which is not found in any other tumors.