Bilateral parotid oncocytoma with spontaneous intratumoral hemorrhage: A rare hypervascular parotid tumor with ASL perfusion

Publication date: Available online 6 February 2016
Source:Clinical Imaging
Author(s): Etsushi Iida, Richard H. Wiggins, Yoshimi Anzai
We present a rare case of bilateral parotid oncocytoma with spontaneous intratumoral hemorrhage. Magnetic resonance imaging revealed multiple, bilateral, well-defined masses within the parotid glands with increased vascularity based on arterial spin labeling MR perfusion imaging and restricted diffusion on diffusion-weighted imaging. During the clinical follow-up, the patient developed extensive hemorrhage from the largest tumor, presumably due to a combination of the hypervascular nature of oncocytoma and hemodialysis.



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