Collagenous Fibroma (Desmoplastic Fibroblastoma) with Vertebral Body Erosion

<table>CT image shows a well-circumscribed, minimally expansile lytic lesion in the right pedicle and adjacent transverse process of L5.  Tiny densities (arrow) represented bony fragments from adjacent degenerated facet joint.</table>

Sarcoma

fig1

Figure 1

Figure 1: Collagenous Fibroma (Desmoplastic Fibroblastoma) with Vertebral Body Erosion 