Imaging:
US shows heterogeneous punctate hyperechoic areas (mucus filled ducts) with hypoechoic foci (sialectasis)
CT shows enlarged hyperdense gland
MR shows salt and pepper or honeycomb appearance
Complications:
Increased risk of lymphoma
References:
Lowe LH et al. Swelling at the Angle of the Mandible: Imaging of the Pediatric Parotid Gland and Periparotid Region. Radiographics. 2001;21:1211-1227