This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
Earliest barium enema finding in UC is 
Select and explain. 
A. Loss of haustration, B. Pseudopolyps, C. Rigid contracted tube, D. Irregular colon wall
A: Loss of haustration
Answer: A: Loss of haustration 
Explanation: (A) Loss of haustration # Special Investigations - BARIUM ENEMA> Barium enema findings in this disease are:-> Loss of haustration.> This is an early finding and is thought to be due to paralysis of the muscularis mucosa.> Irregularities of colon wall represent small ulcerations.> As the disease progresses, pseudopolyps become a prominent finding.> In advanced cases the colon assumes the appearance of a rigid contracted tube due to the scar that forms with repair.