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Trimagnesium orthophosphate in renal calculi
Investigative Urology
|September 1, 1980
Summary
A new urinary calculus component, trimagnesium orthophosphate, was identified in 14 stones containing struvite. This compound appears to be a transformation product of struvite, forming shortly after kidney stone extraction.
Area of Science:
- Urology
- Mineralogy
- Biochemistry
Background:
- Urinary calculi (kidney stones) are complex structures often containing various mineral components.
- Struvite is a common component in infection-induced urinary stones.
- Understanding the formation and transformation of stone components is crucial for diagnosis and treatment.
Purpose of the Study:
- To report the identification of trimagnesium orthophosphate as a component of urinary calculi.
- To investigate the relationship between trimagnesium orthophosphate and struvite.
- To differentiate the formation timeline of trimagnesium orthophosphate from other calculus components like newberyite.
Main Methods:
- Microscopical examination of thin sections from 3500 urinary calculi.
- Identification of mineral components within the calculi.
- Correlation of trimagnesium orthophosphate presence with other stone constituents and post-extraction timelines.
Main Results:
- Trimagnesium orthophosphate was detected in 14 out of 3500 urinary calculi.
- All calculi containing trimagnesium orthophosphate also contained struvite.
- Trimagnesium orthophosphate was consistently found a few days after surgical extraction of struvite kidney stones.
- Newberyite appeared on older stones or after prolonged atmospheric exposure, contrasting with trimagnesium orthophosphate's rapid formation.
Conclusions:
- Trimagnesium orthophosphate is a newly identified component of urinary calculi.
- Evidence suggests trimagnesium orthophosphate is a transformation product of struvite.
- The rapid formation of trimagnesium orthophosphate post-extraction provides insights into urinary stone dynamics.
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