True about small bowel diveicula

.Eighty percent of intestinal obstruction occurs in small bowel; 20% in colon. 70% of colonic obstruction is due to malignancy. Other 30% is due to volvulus; divei-culitis, inflammatory cause like tuberculosis, etc.small bowel diveicula usually contains all layers of bowel wall. ref:SRB's manual of surgery,ed 5,pg no 888