case_images: PMC4327553_01
case_images: CT soft tissue window showing an iso-hypodense nodular mass in the right parapharyngeal space.
case_images: cro-0008-0001-g01.jpg
case_images: PMC4327553_01_cro-0008-0001-g01.jpg
case_images: F1
case_images: The mass was well defined, showing moderate enhancement following intravenous contrast injection (fig. 1).
case_images: CT soft tissue window after intravenous injection showing moderate enhancement and displacement of the cervical great vessels.
case_images: cro-0008-0001-g02.jpg
case_images: PMC4327553_01_cro-0008-0001-g02.jpg
case_images: F2
case_images: It displaced the anterior and medial internal carotid arteries and the internal jugular vein (fig. 2).
case_images: MRI T1 sequence: hypointense signal of the solid mass.
case_images: cro-0008-0001-g03.jpg
case_images: PMC4327553_01_cro-0008-0001-g03.jpg
case_images: F3
case_images: A hypointense signal was seen on the T1 sequence (fig. 3), and a hyperintense signal was seen on the STIR image (fig. 4).
case_images: Gadolinium-enhanced and fat-saturated MRI T1, axial view: moderate peripheral enhancement.
case_images: cro-0008-0001-g05.jpg
case_images: PMC4327553_01_cro-0008-0001-g05.jpg
case_images: F5
case_images: A moderate peripheral enhancement was observed after an intravenous injection of paramagnetic contrast material (fig. 5, fig. 6).
case_images: HE staining.
case_images: cro-0008-0001-g07.jpg
case_images: PMC4327553_01_cro-0008-0001-g07.jpg
case_images: F7
case_images: Subsequently, a biopsy confirmed a 'fragment of acinic cell carcinoma' (fig. 7, fig. 8).