we report a case of a 75 years old male diagnosed on 2006 with a low rectal cancer and operated with an abdominoperineal resection procedure at that time. Since then, he was doing fine with his end colostomy until 29/07/2011, when he was presented with stoma site redness, pain, tenderness and fever with loose stool; the CT scan showed a distal colon and stoma diverticulitis and abscess lateral to stoma; the patient was managed with drainage, soft diet and antibiotic till it resolved and he was discharged home in a healthy condition.