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(a) Coronal and (b) axial magnetic resonance images show hyperintense and non-enhancing tumor by contrast mass in the right parotid gland.
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In March 2016, a control magnetic resonance imaging (MRI; Figure 1) incidentally revealed a hyperintense tumor in the right parotid gland.
Intraoperative picture of cholesteatoma in the right parotid gland extending from stylomastoid foramen. (A:cholesteatoma; B:wall of external meatus; C:parotid parenchyma; D:facial nerve trunk; E:sternocleidomastoid muscle.)
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Its diameter was 30 mm and it lay on the right facial nerve trunk in between superficial and deep lobes of parotid gland (Figure 2).