n SA Journal of Radiology - Use of MR sialography and T2W fat-suppressed MR in parotitis : tips for the radiologist




Imaging can be helpful when investigating salivary gland pain and swelling. Typically in such cases, an ultrasound (US) or conventional sialogram would be requested in seeking obstructed or dilated ducts, a ductal calculus or an abscess within the gland. Occasionally a computed tomography (CT) scan is requested. Magnetic resonance imaging (MRI) is usually reserved for investigating clinically palpable masses in the glands. In acute non-obstructive parotitis, the differential diagnosis includes acute non-suppurative parotitis (as found in mumps), early Sjögren's syndrome, or suppurative parotitis as seen following duct obstruction. Sometimes there is strong insistence on retrograde contrast sialography; however, this may exacerbate the pre-existing inflammatory process. The imaging of a young patient expands on these observations.


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