Warthin's tumor MRI

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

On MRI, Warthin's tumor is characterized by well-defined bilateral lesions which are heterogeneous and variable in signal intensity.

Key MRI Findings in Warthin's tumor

• MRI is the most appropriate imaging study for these tumors

• MRI can easily differentiate between benign and malignant parotid lesions by evaluating
  • lesion margins,
  • SI of cystic content,
  • extraglandular infiltrative growth pattern,
  • cervical lymph nodes,

• Ill defined images will suggest malignancy

• Hypointense capsule and well defined margins are characteristic of benign lesions
• T1: low to intermediate signal with cyst containing cholesterol components
• T2: heterogenous and variable signal intensity
• T1 C+ (Gd): usually no contrast enhancement

References

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