Why do renal oxalate stones form as a consequence of ileal resection?

Question

Quizplus · Accepted Answer

The increase in renal oxalate stone formation resulting from ileal resection occurs because of impaired bile salt reabsorption. The ileum is the primary site of bile salt reabsorption, and without it, bile salts are eliminated instead of recycled. This leads to a decrease in bile secretion, which impairs lipid digestion and absorption. The resultant increase in fatty acids in the bowel can combine with divalent cations such as calcium, zinc, and magnesium to form insoluble soaps. Normally, these cations would be free to bind with oxalate to prevent colonic absorption of oxalate. However, with the divalent cations already bound as soaps, the colonic absorption of oxalate increases.

Why Do Renal Oxalate Stones Form as a Consequence of Ileal