Chest wall tumor
Bones or muscles of the chest wall can give rise to tumors. Approximately 60 percent of chest wall tumors are cancerous or malignant.
Sixty percent of malignant chest wall tumors are primary, that is, arising directly from the chest wall. The remaining 40 percent are metastatic (spread from another cancer, typically thyroid, colon or genitourinary). Sarcomas (connective tissue malignancy) are the most common primary chest wall malignancy. Sternal or breast bone tumors are overwhelmingly malignant.
Noncancerous or benign chest wall tumors consist of abnormal growth within rib bone or cartilage.