[Causes] Chemotherapy containing fluorouracil (5FU, Capecitabine) Irinotecan [Management] Prescriptions including sandostatin a long acting injection. Over the counter loperamide. [Notes] After colon resection, it will take some time for your digestive system to adjust. By trial and error you will discover which foods you can tolerate. [Side Effect] 
Diarrhea Increased number of stools and/or change in consistency