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Brain MRI in T2 (A), T1 (B), and T1 with contrast enhancement (C). The images reveal a petromastoid mass that appears hypointense in T2 and T1 with avid contrast enhancement, indicating fibrous tissue (white arrows). Additionally, there are internal T2 and T1 hyperintense cystic areas with peripheral rim enhancement and fluid-fluid levels consistent with hematic content (red arrows). These findings collectively indicate FD with associated ABC.
