CT
On a plain CT scan, a large radiodense calculus of size 14 x 6.5 x 7.5 mm (APXMLXCC) was noted in the distalmost submandibular duct on the right side, and another calculus of size 9.7 x 5.0 x 4.4 mm (APXMLXCC) was just proximal to it.
There is an associated dilated right submandibular duct, a mildly shrunken right submandibular gland (compared to the opposite one), and few subcentimeter-sized submandibular region lymph nodes found.
Dilated and gas-filled parotid ducts.