[Contribution of x-ray microanalysis to the study of the growth of a urinary calculus]. / Apport de la microanalyse x à l'étude de la croissance d'un calcul urinaire.

Growth mechanisms of urinary calculi were studied using a scanning electron microscope (SEM) and an x-ray microanalyser (WDS). The observations obtained by SEM and x-ray mapping suggest with calcium, phosphorus, magnesium, sulfur and potassium a possible schema of growth mechanisms for urinary calculi.