Article Figures & Data
Figures
- Fig 1.
Contrast-enhanced CT scans of the neck at the C1 and C2 levels (A) and below the angle of the right mandible (B). A, Complex masses involving the deep and superficial lobes of the right parotid gland are seen. The tumor involving the deep lobe of the parotid gland demonstrates an inhomogeneous mild degree of enhancement (large arrow). The medial margin of the tumor is well defined and compresses the adjacent parapharyngeal space (arrowheads). The superolateral aspect of the tumor blends with the adjacent lateral pterygoid muscle. The superficial lobe of the right parotid gland demonstrates 2 small masses: a solid one with mild enhancement (small arrow) and the other with cystic necrosis and peripheral enhancement (small open arrow). The parotid tissue at the junction of the superficial and deep lobes also demonstrates an ill-defined mass with feeble enhancement (large open arrow). B, Multiple small masses involving the right parotid tail (small arrows) are apparent, including a mass (large arrow) that measured 1.6 cm just below this level.
- Fig 2.
A, Superficial parotidectomy specimen (8.0 × 6.0 × 5.0 cm) with multiple mahogany nodules studding the parenchyma, corresponding to oncocytic hyperplasia (arrowheads). B, Corresponding hematoxylin-eosin (HE)-stained paraffin-embedded section from the specimen described in A shows islands of oncocytes (arrowheads) with interspersed normal acini, fat, and ducts (arrow). Insert shows a high-power view of a polygonal oncocyte (100×, insert 400×). C, Parapharyngeal space (deep lobe of the parotid gland) mass with a central scar oncocytoma (5 × 4.0 × 3.0 cm). D, Corresponding HE-stained paraffin-embedded section from the specimen described in C shows solid sheets of oncocytes. Inset shows a high-power view of a bland oncocyte with ample granular cytoplasm and defined nucleoli (40×, insert 400×).
