1. It can be difficult to find a pouching system to fit over hernias, Bulges and curves

2. A Bronchogenic cyst is a thin-walled cyst or out-pouching (sometimes called a “bud”) of tissue. These cysts are usually fluid or mucus-filled, and typically form in the middle of the airway tree

3. Colostomy: A surgically created opening in the abdomen in which a piece of the colon (large intestine) is brought outside the abdominal wall to create a stoma through which digested food passes into an external pouching system