The stoma has been in place for more than three years, but recently the stoma feels bloated, distended and difficult to defecate. Possible causes include tumor recurrence, intestinal obstruction, and so on. 1. Tumor recurrence: after having stoma for more than three years, the patient recently feels stoma distension, flatulence and difficulty in defecation may be caused by tumor recurrence in digestive tract. Tumor recurrence in digestive tract causes obstruction in digestive tract, so it can lead to defecation difficulty, food stagnation due to unsmooth passage, and food generates gas under the decomposition of intestinal bacterial flora, so there are symptoms of stoma distension and flatulence. 2. Intestinal obstruction: after three years of stoma, due to the repair of fibrous scar at the stoma, causing intestinal adhesion, adhesive intestinal obstruction can be formed, and the passage of food is blocked, so the stoma will be distended and bloated and difficult to defecate and other clinical manifestations. When the patient stoma more than three years, recently feel stoma distention pain and flatulence difficult to defecate, should go to the hospital for further examination to determine the cause of the disease, under the guidance of professional doctors for treatment!