A 55-year-old male patient presents to the clinic for evaluation of intermittent fecal incontinence and fecal urgency. The patient has a history of stage III rectal cancer for which he completed total neoadjuvant therapy (TNT) and low anterior resection (LAR) with diverting loop ileostomy. He is now 3 months status post ileostomy reversal. Despite fiber supplementation and intermittent antidiarrheal medication use, he experiences stool stacking and incomplete evacuation 3 days per week. The patient’s symptoms are consistent with