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Extensive abnormal signal alteration involving the inner table of the left parietal and right frontal bones, the clivus and basiocciput with associated expansion of the left side of the basiocciput, particularly the left jugular tubercle and occipital condyle, corresponding to a heterogeneous pattern of enhancement on postcontrast images with restricted diffusion on DWI, resulting in narrowing of the left hypoglossal canal with secondary involvement of the left hypoglossal nerve.
Heterogeneous enhancement and swelling involving the left hemitongue, with associated obliteration of the left vallecula and median glossoepiglottic fold.