Case Report

A Calcium Enterolith in a Patient with Crohn’s Disease and Its In Vitro Dissolubility in Citric Acid

Figure 6

Spectra obtained using energy-dispersive X-ray spectroscopy. Calcium, magnesium, and phosphate exist in the enterolith piece immersed in double-distilled water (a). The amount of these elements was decreased in the piece immersed in the citric acid solution (b).