Optical microscopy of urinary stones: case study


Urinary stones, commonly called “kidney stone”, is a small solid mass made up of tiny crystals. The objective of this work was to apply the polarized transmitted light microscopy method to describe and to analyze urinary stone fragments, comparing the results with the X-ray diffraction method. Both analyses identified whewellite predominance associated with the presence of relevant amount of uricite. The textural description, presented by optical microscopy, indicated the occurrence of three crystallization events and allowed the correlation with the possible causes of stone formation, allowing the urologist and the nutritionist to review the patient’s diet in order to avoid recurrence of stone formation. It is concluded that optical microscopy, together with X-ray diffraction, is an important tool in the mineralogical and textural characterization of urinary stones and may be useful for the diagnosis and recurrence prophylaxis.

QUITETE, Eduardo Brandau; PINTO, Natasha da Silveira; LEAL, Priscila Rodrigues Melo; CARDOSO, Jilson; CHOTOLI, Fabiano Ferreira. Microscopia óptica de cálculos urinários: estudo de caso. Revista IPT: Tecnologia e Inovação, v.3, n.12, p.50-62, dez., 2019.

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