This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Surgery
Investigation of choice for esophageal rupture is 
Select and explain. 
A. Dynamic MRI, B. Rigid esophagoscopy, C. Barium contrast swallow, D. Water soluble low molecular weight contrast swallow
D: Water soluble low molecular weight contrast swallow
Answer: D: Water soluble low molecular weight contrast swallow 
Explanation: Gastrografin (water soluble) is preferred to prevent extravasation of barium into the mediastinum or pleura. If no leak is seen, a barium study should follow