Due to underlying Sjogren's syndrome, there is extreme fatty replacement of both submandibular (shown on @Key Finding 1) and the parotid glands. However, the right submandibular gland is enlarged compared to the left, has internal edema and increased attenuation, substantial surrounding stranding as well as infiltrative edema extending to the adjacent tissues. Notice how on @Key Finding 1, the edema extends to the right aspect of the oropharynx and results in effacement of the right vallecula compared to the left (green arrow).

On @Key Finding 2, you can see bilateral distal submandibular duct stones. There are quite a few more stones (@Key Finding 3, @Key Finding 4). The right submandibular duct is dilated (@Key Finding 4 and @Key Finding 5) and has mucosal hyperenhancement (@Key Finding 5).

These constellation of finding are consistent with right submandibular sialadenitis due to sialolithiasis.