Answer
Jan 13, 2026 - 12:32 PM
A convex ostomy appliance has a raised, curved surface around the opening that gently presses against the skin, helping the stoma protrude and improving the seal—this is often used for stomas that are flush or retracted. A flat ostomy appliance has a level surface and is typically used when the stoma sticks out (protrudes) well from the abdomen.
