Fig. 22.

Renal osteodystrophy and osteopenia. Patient 1: Axial (a) and coronal (b) head CT images depict granular de-ossification with a “pepper pot” appearance (thick arrows) and loss of distinction of the inner and outer tables (dashed arrows) in this patient with renal osteodystrophy. Patient 2: Axial (c) and coronal (d) head CT images show demineralisation of the skull (arrowheads) in this patient with osteopenia. Note the relative preservation of the distinction of the inner and outer tables in osteopenia