This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, 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 sialoadenitis
C: Acute parotitis
Answer: C: Acute parotitis 
Explanation: Sialography is contraindicated in acute sialadenitis (includes parotitis) for fear of exacerbating the condition." Sialography Is the contrast x-ray examination of the salivary ducts and glands Also k/a ptyalography