A 29-year-old man came to the surgery department of a dental hospital. He complains of painful facial swelling on the right that appeared 1.5-2 months ago and has been gradually increasing since then. Objectively mouth opening is unrestricted, the face is asymmetrical due to a swelling in the right parotid-masseteric region. The skin over the edema is hyperemic and swollen; palpation detects a painful infiltration 3 cm in size. Massage in this region results in discharge of clear saliva from the excretory duct of the right parotid salivary gland. What disease can be suspected in this case?