Clinical feature: 

Definition: This group of diseases is characterized by accumulation of calcium-containing hard-substances in kidney's interstitium and recurrent kidney stones.

Diagnostics: 

Differential: Uric acid nephropathy is also accompanied by accumulation of interstitial in the kidney and recurrent nephrolithiasis, but by contrast uric acid cristals are not x-ray detectable.  » » » 

Literature: 

Vervaet BA et al. (2009) Nephrocalcinosis: new insights into mechanisms and consequences.
Stechman MJ et al. (2009) Genetic causes of hypercalciuric nephrolithiasis.
Moochhala SH et al. (2008) Renal calcium stones: insights from the control of bone mineralization.