osteochondroma
- punctuate or floccuolent calcification with a mineralized hyaline cartilage cap. The cortex and medullary space blend into underlying bone.
** the dense calcification of the tumor
- a trabeculated, expansile lesion with soap[ bubble or ground glass center and thinning cortex
** typical-appering fibrous dysplasia as expansile lesion
** the expansile and amorphous nature on CT
- punctate calcifications of the matrix and scalloping of th cortex
** calcification within the mass
- a small (< 1 cm) radiolucent lesion, termed a nidus, with a thick sclerotic margin of reactive bone
- left-sided elastofibroma with left shoulder mass
- lung SCC invading the 5th and 6th ribs : invasion from adjacent malignancies or metastases are more common than primary malignancy chest wall tumors
chondrosarcoma
- a lobulated mass of soft tissu eattenuation with dense calcification
** the prominent chondroid matrix mineralization with mottled calcification
** dense calcification within the mass
- large, heterogeneous mass with areas of bony destruction
** osteosarcoma involving the sternum
- Ewing sarcoma invading 3rd and 4th ribs
- variable nondescript appearance, depending on the amout of collagen content, but generally with similar enhancement to muscle
** locally recurrent desmoid tumor involving the left chest wall
