Gas outlining the posterior wall of which of the following structures helps to assist in measuring the presacral space on lateral radiographic examination of the spine?

Question

Quizplus · Accepted Answer

Gas in the rectum can outline the posterior wall of the presacral space, which helps in measuring the space on lateral radiographic examination of the spine. Gas in the other structures listed (cecum, sigmoid colon, urinary bladder) would not assist in measuring the presacral space.

Gas Outlining the Posterior Wall of Which of the Following