So what is renal osteodystrophy?

MORPHOLOGIC FEATURES.

The following skeletal lesions can be identified in renal osteodystrophy:

1. Mixed osteomalacia-osteitis fibrosa is the most common manifestation of renal osteodystrophy resulting from
   disordered vitamin D metabolism and secondary hyperparathyroidism.
2. Pure osteitis fibrosa results from metabolic complications of secondary hyperparathyroidism.
3. Pure osteomalacia of renal osteodystrophy is
   attributed to aluminium toxicity.
4. Renal rickets resembling the changes seen in children
   with nutritional rickets with widened osteoid seams
   may occur .
5. Osteosclerosis is characterised by enhanced bone
   density in the upper and lower margins of vertebrae.
6. Metastatic calcification is seen at extraosseous sites
   such as in medium-sized blood vessels, periarticular
   tissues, myocardium, eyes, lungs and gastric mucosa.

source -textbook of pathology for dental students c p baveja and image source- Google