Ultrasound and sialography basics
Oral Medicine and Radiology · Dental (BDS)
Study notes
A parotid swelling needs imaging. Why ultrasound first? It's non-invasive, radiation-free, distinguishes cystic from solid, and guides FNAC needles - sialography (contrast injection) is reserved for duct-specific questions like stones/strictures. Students learn the invasiveness ladder: look with sound first, inject contrast only when the ducts themselves are the question.
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