Vaginal ring pessary
Study for diffuse abdominal pain.
CT abdomen and pelvis
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CT with intravenous contrast in this elderly patient shows occupation of the vaginal cavity by foreign body annular morphology or "doughnut".
A mechanical pessary is most commonly used to treat uterine prolapse. As an incidental finding in imaging studies a ring structure with the form of "doughnut" can be a pessary.