Chest wall tumors are uncommon. They can be either benign or
malignant. Chest wall tumors form in the walls of the chest cavity,
which protect the lungs and heart. Chest wall tumors are either
primary or secondary (metastasized). Secondary chest wall tumors are
The most common primary malignant chest wall tumors are called
specifically. Chest wall sarcomas form in the bones, soft tissues, and
cartilage of the chest cavity. Metastatic lesions (particularly from
breast cancer) can also occur.