Left parotid lipoma. The left parotid gland is asymmetrically prominent without evidence of a discrete mass or abnormal enhancement. There is marked fatty atrophy of the right parotid gland. The left submandibular gland is slightly larger than the right submandibular gland. The thyroid gland is unremarkable. There is no evidence of significant cervical lymphadenopathy. The osseous structures are unremarkable. The airways are patent. The imaged intracranial structures are unremarkable. There is a small mucous retention cyst in the right maxillary sinus.
1. Diffuse mild enlargement of the left parotid gland without evidence of a discrete mass, which may represent compensatory hypertrophy in response to marked fatty atrophy of the right parotid gland. 2. No significant cervical lymphadenopathy. 