Upper Gastrointestinal Bleeding Secondary to Sodium Polystyrene Sulfonate Use: A Rare Adverse Effect of Commonly Prescribed Treatment

Figure 3

Gastric ulcer biopsy. (a) Reactive epithelium with corkscrew appearance of the surface epithelium (H & E, 100x). (b) Oxyntic mucosa with ulceration and marked reactive epithelial change (H & E, 100x). (c) Sodium polystyrene sulfonate crystals scattered in necrotic oxyntic mucosa (H & E, 100x). (d) Magnified image of sodium polystyrene sulfonate crystals with fish scale appearance (H & E, 400x).

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