This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
In which one of the following conditions the Sialography is contraindicated? 
Select and explain. 
A. Ductal calculus, B. Chronic parotitis, C. Acute parotitis, D. Recurrent sialadenitis
C: Acute parotitis
Answer: C: Acute parotitis 
Explanation: Sialography (Ptyalography, sialogram) is contraindicated in acute sialadenitis. Ref: Text Book of Radiology and Imaging By Sutton, 7th Edition, Page 535