Periosteal chondroma of the rib: A case report

Figure 1 Computed tomography. A and B: Representative plain computed tomography showed a lobulated soft tissue mass on the right side of the T4/5 vertebra that measured about 47 mm × 28 mm in the transverse view and contained diffuse stippled calcification; C: The mass caused cortical scalloping of the right fourth rib, rim ossification (arrow), and narrowing of the myeloid cavity. Enhanced computed tomography showed mild enhancement of the mass.