 There is a lobulated T2 hyperintense, nonenhancing lesion involving the deep lobe of the right parotid gland. Lesion measures up to 24 x 10 mm in the long and short axis, respectively, coronal series 301 image 36. There is no significant change in size since earliest available MRI dated 11/13/2015. There appears to be a small septation and possibly low signal posteriorly which may represent dependent debris.There are no abnormal masses or evidence of pathologic enhancement elsewhere in the neck. There are scattered subcentimeter lymph nodes which are nonspecific. No pathologically enlarged or necrotic lymph nodes are seen. Remainder of the salivary glands are unremarkable.
1. Nonenhancing cystic lesion involving the deep lobe of the right parotid gland most likely represents a benign cystic lesion such as lymphatic malformation. This lesion is unchanged since 11/13/2015. Additional follow-up or perhaps aspiration can be considered to exclude other etiologies such as necrotic node as clinically indicated.2. No suspicious neck masses or cervical lymphadenopathy.