Findings:
The patient presents with facial swelling due to extensive inflammatory disease involving the parotid gland. The main parotid duct is obstructed, possibly near its opening above the left second molar, but cannot be determined clinically. No radiodense stone is evident in that area along the roof of the mouth. The parotid gland enhances and has a markedly dilated ductal system, suggesting potential parotid abscess formation. Findings are currently confined to the parotid gland, with reactive parotid adenopathy and surrounding cellulitis. The masseter muscle is slightly swollen, likely causing trismus, with no deep extension. The right parotid gland and submandibular glands are normal. Visualized brain portions are age-appropriate, and the remainder of the neck is normal. Patchy groundglass change is noted in the posterior segment of the right upper lobe, of uncertain significance. Incidentally, a 1 cm ossification is present along the tentorial margin near the confluence of the internal cerebral veins, possibly representing a completely ossified meningioma or an unusual manifestation of dural calcification.

Impression:
High grade obstruction of the left parotid duct resulting in extensive sialadenitis and a parotid abscess. There is also surrounding cellulitis and reactive adenopathy. There is a tentorial dural ossification.

Recommendations:
For your training purposes, recommendations are not included in this report.