Living with a stoma.

pressure. Mural thickness is assessed by measuring the distance from the echogenic mucosa to the outer oedematous wall that shows few echoes.9 There are no published criteria for the normal thickness of the wall. Ancillary findings may be an asymmetric thickening of the appendix wall, periappendiceal fluid or a soft tissue mass (abscess formation), and echoes within the lumen with or without acoustic shadowing, which can represent faeces, an appendicolith, or merely pus formation.9