KD involving bilateral buccal spaces in a 52-year-old man. KD involving bilateral buccal spaces in a 52-year-old man. A, Axial T1-weighted MR image demonstrates ill-defined soft-tissue masses in the bilateral buccal spaces, isointense to the adjacent muscle. Note the reticular infiltration of the subcutaneous tissue around the lesions. B, Postcontrast coronal fat-suppressed T1-weighted MR image demonstrates homogeneous marked enhancement of the lesions. Note tubular or dotlike signal-intensity voids at the periphery of the lesions, probably representing fast-flowing vascular structures (arrows). S.-W. Park et al. AJNR Am J Neuroradiol 2012;33:784-788 ©2012 by American Society of Neuroradiology