Presentation
Preoperative evaluation for kidney transplant.
Patient Data
Age: 45 years
Gender: Female
From the case:
Tampon on pelvis x-ray
Frontal

There is a cylindrical gas-filled structure in the pelvis in the orientation of the vagina.
Case Discussion
Recognition of these on x-rays can be important, especially in patients who are obtunded because they may overlooked and be a cause of subsequent infection and sepsis.