Pleomorphic adenoma - recurrence
Citation, DOI and case data
Had surgery for a right parotid mass fifteen years ago.
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Numerous well-defined nodules within the right parotid gland ranging from 4 to 16 mm of intermediate signal on T1WI, high signal on T2WI with a peripheral hypointense capsule, and heterogeneous enhancement on postcontrast sequences. No restricted diffusion on DWI/ADC. The time signal intensity curve (TIC) shows a progressive and gradual enhancement within the tumor with delayed peak time (243 s) giving the appearance of a TIC type A according to Yabuuchi et al classification.
The ADC within the mass is 2.38 x normal (>1.2 usually suggestive of pleomorphic adenoma).
The left parotid gland shows a normal appearance.
No cervical lymphadenopathy.