What masses can involve the ileocaecal junction?
Irregularity of the ileocaecal valve on fluoroscopy may indicate carcinoma arising from the valve. If the valve is symmetrically enlarged and smooth, ileocaecal valve lipomatosis could be considered. Asymmetric smooth enlargement of the ileocaecal valve could represent a lipoma of the valve, but, practically, carcinoma would have to be excluded first.
A normal, competent ileocaecal valve/sphincter is outlined in a single contrast barium enema.