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CT (day 1) and MR (day 16) of the brain. A, CT shows enlargement and hypoattenuation in the lateral pterygoid muscles bilaterally. B-D, MR images show that the muscles are isointense on the T1-weighted image (B), hyperintense on the T2-weighted image (C), and enhanced on the postcontrast fat-suppressed T1-weighted image (D).
