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[Calcium oxalate monohydrate (whewellite) renal lithiasis]
Annales D'Urologie
|January 1, 1985
Summary
Pure calcium oxalate monohydrate lithiasis is uncommon, affecting 5-10% of kidney stone cases. These hard, dark brown stones often present with normal biological markers and show slow progression.
Area of Science:
- Nephrology
- Urology
- Mineralogy
Background:
- Renal lithiasis encompasses various stone types, with calcium oxalate being prevalent.
- Pure calcium oxalate monohydrate stones represent a specific, less common subtype.
Purpose of the Study:
- To characterize the prevalence, physical attributes, radiological appearance, and biological associations of pure calcium oxalate monohydrate renal lithiasis.
- To understand the typical clinical evolution of this stone type.
Main Methods:
- Review of epidemiological data on renal lithiasis prevalence.
- Analysis of stone physical characteristics (color, hardness).
- Radiological assessment of stone morphology.
- Biological marker analysis (calciuria, oxaluria).
Main Results:
- Pure calcium oxalate monohydrate lithiasis accounts for 5-10% of all renal stones, with equal prevalence in men and women.
- Stones are characterized by a dark brown, polished appearance and significant hardness.
- Radiological imaging shows regular and homogeneous stone visualization.
- Associated biological findings frequently include normal calciuria and oxaluria.
Conclusions:
- Pure calcium oxalate monohydrate stones are a distinct entity within renal lithiasis.
- Their rarity, specific physical and radiological properties, and association with normal metabolic parameters are key identifiers.
- These stones typically exhibit a slow or negligible rate of clinical evolution.