Parapharyngeal pleomorphic adenoma

Case contributed by Dr Ammar Haouimi


Painless swelling the right submandibular region.

Patient Data

Age: 40 years
Gender: Female

The MRI sequences demonstrate a well-circumscribed lobulated soft tissue mass within the right prestyloid parapharyngeal space in contact with the deep lobe of the parotid gland, displacing the adjacent pharyngeal tonsil anteromedially. It shows a low signal intensity on T1WI, high signal intensity on T2WI with progressive and heterogeneous enhancement on postcontrast sequences. No restricted diffusion is seen on DWI/ADC. The carotid vessels as well as the internal jugular vein are displaced posteriorly.

A pituitary microdenoma (5 mm) is noted (incidentaloma).



Case Discussion

The location and the MRI features are suggestive of a parapharyngeal pleomorphic adenoma arising probably from the deep parotid lobe or the minor salivary glands

The main differential diagnosis in this location include

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Case information

rID: 68833
Published: 27th Jun 2019
Last edited: 11th Apr 2021
System: Head & Neck
Inclusion in quiz mode: Included
Institution: Aurès Medical Imaging Center - Batna Algeria

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