Assertion: fistula | /r/CapableOf | enable better pouch seal
Facets:
Source sentences:
text: If the fistula empties directly onto the skin and is level with the skin, a convex pouching system is usually required; in contrast, a fistula that has undergone mucosal maturation (pseudostoma formation) and that protrudes above the level of the skin may enable a better pouch seal.