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Chest Wall Tumors
Chest wall tumors are benign or malignant tumors that can interfere with pulmonary function.
Primary chest wall tumors account for 5% of all thoracic tumors and 1 to 2% of all primary tumors. Almost half are benign; the most common are osteochondroma, chondroma, and fibrous dysplasia. A wide range of malignant chest wall tumors exist. Over half are metastases from distant organs or direct invasions from adjacent structures (breast, lung, pleura, mediastinum). The most common malignant primary tumors arising from the chest wall are sarcomas; about 45% originate from soft tissue, and 55% originate from cartilaginous tissue or bone. Chondrosarcomas are the most common primary bone chest wall sarcoma and arise in the anterior tract of ribs and less commonly from the sternum, scapula, or clavicle. Other bone tumors include osteosarcoma and small-cell malignant tumors (eg, Ewing sarcoma, Askin tumor). The most common soft-tissue primary malignant tumors are fibrosarcomas (desmoids, neurofibrosarcomas) and malignant fibrous histiocytomas. Other primary tumors include chondroblastomas, osteoblastomas, melanomas, lymphomas, rhabdomyosarcomas, lymphangiosarcomas, multiple myeloma, and plasmacytomas.
Most chest wall tumors are treated with surgical resection and reconstruction. Reconstruction often uses a combination of myocutaneous flaps and prosthetic materials. The presence of a malignant pleural effusion is a contraindication to surgical resection. Also, in cases of multiple myeloma or isolated plasmacytoma, chemotherapy and radiation therapy should be the primary therapy. Small-cell malignant tumors such as Ewing sarcoma and Askin tumor should be treated with a multimodality approach, combining chemotherapy, radiation therapy, and surgery. In cases of chest wall metastasis from distant tumors, a palliative chest wall resection is recommended only when nonsurgical options do not alleviate symptoms.
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